2015-16 - Wyoming Water Year Climate Summary

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Previous Annual and Water Year Climate Summaries

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Note: Drought Classifications listed are from the October 20, 2016 Drought Monitor

Wyoming: Water Year 2015-16 (Oct-Sep)

Climate Division: Wyoming (Statewide Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	48.7	29.2	21.3	22.7	29.9	34.4	41.8	47.8	63.8	66.6	63.4	55.3	43.7
20th Century Average	42.5	29.0	20.6	18.4	22.3	29.1	38.8	48.4	57.6	65.3	63.4	53.6	40.8
Departure from Avegage	6.2	0.2	0.7	4.3	7.6	5.3	3.0	-0.6	6.2	1.3	0.0	1.7	3.0
Rank: Warm to Cold (122 yrs)	2	58	63	24	4	13	26	70	2	39	64	37	5
Rank: Cold to Warm (122 yrs)	120	64	64	98	119	110	97	53	121	84	59	86	117

Precipitation	1.11	1.09	1.11	0.87	0.81	2.00	2.52	2.50	0.68	0.69	0.84	2.04	16.26
20th Century Average	1.20	1.03	1.01	1.06	0.97	1.25	1.77	2.21	1.84	1.28	1.07	1.24	15.93
Percent of Average	93	106	110	82	84	160	142	113	37	54	79	165	102
Rank: Dry to Wet (122 yrs)	54	72	72	43	42	112	110	86	9	10	43	108	66
Rank: Wet to Dry (122 yrs)	68	50	50	79	81	11	13	37	114	113	80	15	56

Wyoming Climate Divisions: Water Year 2015-16 (Oct-Sep)

Wyoming Climate Divisions Map - Click to Enlarge

Climate Division 1 - Yellowstone Drainage

Climate Division: Yellowstone (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	43.9	23.4	18.4	21.7	26.2	29.3	39.2	43.9	56.3	58.2	57.3	49.0	38.9
20th Century Average	37.3	24.6	16.9	15.2	18.9	24.3	33.3	42.4	50.3	57.9	56.2	47.4	35.4
Departure from Avegage	6.6	-1.2	1.5	6.4	7.3	5.0	5.9	1.5	6.0	0.3	1.1	1.6	3.5
Rank: Warm to Cold (122 yrs)	1	80	45	8	5	13	7	34	4	62	41	37	4
Rank: Cold to Warm (122 yrs)	121	42	77	114	118	110	116	89	119	64	82	86	118

Precipitation	2.21	2.81	3.40	1.80	1.58	2.65	1.83	2.50	1.02	1.17	0.47	2.33	23.77
20th Century Average	1.88	2.49	2.63	2.89	2.26	2.61	2.47	2.84	2.57	1.61	1.51	1.80	27.56
Percent of Average	118	113	129	62	70	102	74	86	40	73	31	129	86
Rank: Dry to Wet (122 yrs)	79	75	98	34	31	63	32	53	8	41	9	86	21
Rank: Wet to Dry (122 yrs)	43	47	24	88	92	60	91	70	115	82	114	37	101

Station Name:	Drought Conditions				Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
click on location			D0	D1
for graph	D2	D3		D4
Old Faithful	D0				1.21	2.49	3.07	1.27	1.15	1.83	1.31	2.07	0.67	1.64	0.77	2.96	20.44
1981-2010 Normals					1.66	2.29	3.16	2.11	1.99	2.21	2.21	2.80	2.47	1.55	1.46	1.46	25.37
Percent of Normal					73	109	97	60	58	83	59	74	27	106	53	203	81
Snowfall					T	20.5	47.5	27.8	11.3	29.3	2.0	T	0	0	0	3.5	141.9
1981-2010 Normals					7.7	31.7	43.8	37.5	31.1	26.8	19.3	7.3	1.2	0.0	0.0	1.4	207.8
Percent of Normal					0	65	108	74	36	109	10	0	0	0	0	250	68

Climate Division 2 - Snake Drainage

Climate Division: Snake (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	42.9	22.5	16.3	19.0	24.1	27.9	37.5	42.7	54.6	57.6	56.4	48.6	37.5
20th Century Average	37.4	24.3	16.0	14.7	18.3	23.6	33.0	42.3	50.0	57.7	56.0	47.5	35.1
Departure from Avegage	5.5	-1.8	0.3	4.3	5.8	4.3	4.5	0.4	4.6	-0.1	0.4	1.1	2.4
Rank: Warm to Cold (122 yrs)	2	84	57	23	12	16	11	51	7	70	54	45	6
Rank: Cold to Warm (122 yrs)	120	38	65	99	111	107	112	72	116	53	69	78	116

Precipitation	2.29	3.16	4.62	3.60	2.19	4.31	2.19	3.26	0.97	0.69	0.45	3.22	30.95
20th Century Average	2.12	3.33	3.72	4.34	3.59	3.45	2.81	2.91	2.31	1.32	1.46	1.77	33.13
Percent of Average	108	95	124	83	61	125	78	112	44	52	31	182	93
Rank: Dry to Wet (122 yrs)	69	61	91	53	28	92	32	79	20	19	10	109	44
Rank: Wet to Dry (122 yrs)	53	61	31	69	95	31	91	44	103	104	113	14	78

Station Name:	Drought Conditions				Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
click on location			D0	D1
for graph	D2	D3		D4
Afton	None				0.63	1.32	1.02	1.57	0.84	2.11	1.75	3.80	0.40	0.41	0.12	3.68	17.65
1981-2010 Normals					1.63	2.04	1.25	1.40	1.09	1.40	1.54	2.26	1.97	1.43	1.25	1.46	18.16
Percent of Normal					39	89	82	112	77	151	114	168	20	29	10	252	97
Snowfall					0.0	15.3	20.2	27.8	14.5	23.0	1.4	0.3	0.0	0.0	0.0	0.6	103.1

Moose	None				1.94	2.11	3.93	3.02	0.83	2.28	1.00	1.57	0.69	0.75	0.18	2.37	20.67
1981-2010 Normals					1.47	2.64	2.67	2.58	1.82	1.62	1.49	1.88	1.61	1.29	1.29	1.44	21.80
Percent of Normal					132	80	147	117	46	141	67	84	43	58	14	165	95
Snowfall					0.1	17.8	42.8	56.5	5.1	24.1	T	0.0	0.0	0.0	0.0	0.0	146.4
1981-2010 Normals					4.8	24.1	44.7	36.9	26.6	15.9	7.4	2.2	0.0	0.0	0.0	0.2	162.8
Percent of Normal					2	74	96	153	19	152	0	0	0	0	0	0	90

JHMR MId Mtn	None
Snowfall					3.0	41.0	79.0	94.0	37.0	71.0	6.0	3.0				0.0	334.0
1975-2015 Average					16.0	33.0	75.0	81.0	64.0	55.0	19.0	14.0				1.0	358.0
Percent of Normal					19	124	105	116	58	129	32	21				0	93

Climate Division 3 - Green and Bear Drainages

Climate Division: Green amd Bear (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	47.3	26.4	17.5	18.1	26.4	32.0	40.2	45.8	61.0	63.8	61.0	53.2	41.1
20th Century Average	40.7	27.0	18.3	16.2	19.7	27.0	37.0	46.6	55.3	62.8	60.8	51.6	38.6
Departure from Avegage	6.6	-0.6	-0.8	1.9	6.7	5.0	3.2	-0.8	5.7	1.0	0.2	1.6	2.5
Rank: Warm to Cold (122 yrs)	2	71	73	47	9	15	25	79	3	41	58	32	7
Rank: Cold to Warm (122 yrs)	120	51	49	75	114	108	98	44	120	82	65	91	115

Precipitation	0.80	1.04	1.13	1.08	0.71	1.78	1.90	3.43	0.54	0.34	0.54	2.01	15.30
20th Century Average	1.16	1.03	1.03	1.15	1.06	1.17	1.37	1.55	1,14	0.94	1.00	1.10	13.70
Percent of Average	69	101	110	94	67	152	139	221	47	36	54	183	112
Rank: Dry to Wet (122 yrs)	40	64	72	47	25	109	101	117	30	6	31	106	88
Rank: Wet to Dry (122 yrs)	82	58	50	75	98	14	22	6	93	117	92	17	34

Station Name:

Drought
Conditions

Oct
2015

Nov
2015

Dec
2015

Jan
2016

Feb
2016

Mar
2016

Apr
2016

May
2016

Jun
2016

Jul
2016

Aug
2016

Sep
2016

Total for
Water Year

click on location

for graph

Big Piney Airport

None

0.71

0.42

0.11

0.04

0.13

0.82

1.07

3.99

0.73

0.25

0.45

1.56

10.28

1981-2010 Normals

0.53

0.21

0.30

0.31

0.35

0.44

0.53

0.84

0.79

0.71

0.69

0.78

6.48

Percent of Normal

134

200

186

202

475

200

159

Evanston Airport

None

0.42

0.16

0.41

0.30

0.02

0.25

0.76

2.07

0.29

0.18

1.85

6.71

1981-2010 Normals

1.17

1.04

0.58

0.54

0.61

0.86

1.15

1.77

1.24

0.90

0.96

1.31

12.13

Percent of Normal

117

141

Rock Springs Arpt.

None

0.15

0.17

0.04

0.03

0.19

0.56

1.48

2.20

0.21

0.30

0.20

1.59

7.12

1981-2010 Normals

0.87

0.49

0.50

0.45

0.48

0.68

0.91

1.21

0.79

0.64

0.62

0.92

8.56

Percent of Normal

163

182

173

Bitter Creek 4NE

None

0.32

0.38

0.34

0.37

0.89

1.12

2.00

0.26

0.49

0.31

1.82

8.67

1981-2010 Normals

0.66

0.31

0.51

0.28

0.36

0.30

0.65

1.09

0.70

0.60

0.75

0.73

6.94

Percent of Normal

123

132

103

297

172

183

249

125

Fossil Butte
National Monument

None

0.91

0.72

1.26

0.90

0.54

1.66

1.51

4.66

0.38

0.47

1.43

14.44

1981-2010 Normals

1.11

0.86

0.74

0.49

0.68

0.82

0.98

1.41

1.03

0.85

0.93

1.10

11.00

Percent of Normal

170

184

202

154

330

515

130

131

Snowfall

7.6

19.5

16.5

9.8

19.4

0.5

1.3

0.0

1.0

75.6

Green River

None

0.38

1.18

1.00

0.85

0.57

1.63

2.22

3.76

0.68

0.18

0.79

2.08

15.32

1981-2010 Normals

0.81

0.41

0.44

0.34

0.43

0.71

0.85

1.23

0.98

0.55

0.68

0.90

8.33

Percent of Normal

288

227

250

133

230

261

306

116

231

184

Snowfall

0.0

9.5

10.3

9.4

7.6

13.3

6.5

0.0

56.6

1981-2010 Normals

0.5

3.8

6.5

4.6

7.3

5.0

3.9

0.6

0.0

32.2

Percent of Normal

250

158

204

104

266

167

176

Rock Springs

None

0.27

0.65

0.96

0.39

0.32

1.69

4.16

3.40

0.39

0.06

0.33

2.32

14.94

1981-2010 Normals

1.09

0.52

0.44

0.46

0.67

0.91

1.42

0.86

0.73

0.96

1.08

9.66

Percent of Normal

125

185

252

457

239

215

155

Snowfall

0.0

7.0

11.2

5.4

4.1

13.5

3.0

0.0

44.2

Climate Division 4 - Big Horn Drainage

Climate Division: Big Horn (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	49.0	29.3	22.1	24.6	31.8	35.3	43.4	49.4	64.5	66.6	64.4	55.1	44.6
20th Century Average	42.6	29.2	20.6	17.7	22.7	30.2	39.8	49.1	58.1	65.8	63.7	53.5	41.1
Departure from Avegage	6.4	0.1	1.5	6.9	9.1	5.1	3.6	0.3	6.4	0.8	0.7	1.6	3.5
Rank: Warm to Cold (122 yrs)	2	64	56	14	4	16	20	56	3	53	50	42	4
Rank: Cold to Warm (122 yrs)	120	58	66	108	119	107	103	67	120	70	73	81	118

Precipitation	1.15	1.05	0.83	0.45	0.59	1.72	2.44	2.07	0.58	0.58	0.72	2.75	14.93
20th Century Average	1.14	0.95	0.87	0.92	0.75	1.12	1.75	2.22	1.92	1.13	0.94	1.31	15.02
Percent of Average	101	111	95	49	79	154	139	93	30	51	77	210	99
Rank: Dry to Wet (122 yrs)	68	73	67	19	45	104	101	63	8	25	53	112	56
Rank: Wet to Dry (122 yrs)	54	49	55	103	78	19	22	60	115	98	73	11	66

Station Name:	Drought Conditions				Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
click on location			D0	D1
for graph	D2	D3		D4
Greybull Airport	D0				0.24	0.25	0.01	0.11	T	0.36	0.46	1.36	0.17	0.09	0.33	2.76	6.14
1981-2010 Normals					0.30	0.28	0.60	0.23	0.18	0.40	0.71	1.65	1.20	0.66	0.42	0.88	7.51
Percent of Normal					40	83	4	48	0	90	65	82	14	14	79	314	82

Worland Airport	None				0.33	0.68	0.28	0.03	T	0.97	1.34	1.42	0.29	0.15	0.27	1.97	7.73
1981-2010 Normals					0.69	0.35	0.23	0.23	0.19	0.46	0.86	1.42	1.15	0.71	0.43	0.85	6.72
Percent of Normal					48	194	122	13	0	211	156	100	25	21	63	232	115

Cody	D0				1.86	0.47	0.50	0.10	0.03	0.80	2.86	1.68	0.26	1.01	0.62	2.14	12.33
1981-2010 Normals					0.89	0.48	0.33	0.33	0.33	0.56	1.06	1.82	1.68	1.11	0.91	1.06	10.56
Percent of Normal					209	98	152	30	9	143	270	92	15	91	68	202	117
Snowfall					0.0	4.9	4.1	1.6	T	2.3	0.0	0.0	0.0	0.0	0.0	0.0	12.9
1981-2010 Normals					4.3	6.3	8.0	7.8	6.7	6.9	6.3	0.8	0.0	0.0	0.0	0.2	47.3
Percent of Normal					0	78	51	21	0	33	0	0	0	0	0	0	27

Powell Field Station	D0				0.88	0.18	0.11	0.00	0.00	0.26	0.61	1.42	0.26	0.50	0.24	1.58	6.04
1981-2010 Normals					0.56	0.18	0.13	0.21	0.13	0.29	0.51	1.40	1.35	0.87	0.52	0.65	6.80
Percent of Normal					157	100	85	0	0	90	120	101	19	57	46	243	89
Snowfall					0.0	2.0	0.6	0.0	0	T	0.0	0.0	0.0	0.0	0.0	0.0	2.6
1981-2010 Normals					1.2	1.3	1.2	2.3	0.5	2.5	0.5	0.5	0.0	0.0	0.0	0.1	10.1
Percent of Normal					0	154	50	0	0	0	0	0	0	0	0	0	26

Thermopolis	None				1.25	0.82	0.55	0.10	0.25	2.52	3.32	1.30	0.02	0.02	0.72	3.16	14.03
1981-2010 Normals					1.26	0.80	0.46	0.35	0.45	0.87	1.46	1.86	1.51	0.88	0.58	1.23	11.71
Percent of Normal					99	103	120	29	56	290	227	70	1	2	124	257	120
Snowfall					0.0	5.0	13.0	1.5	5.0	2.0	0.0	0.0	0.0	0.0	0.0	0.0	26.5
1981-2010 Normals					2.4	3.7	4.5	5.6	4.6	2.5	2.8	0.4	0.0	0.0	0.0	0.2	26.7
Percent of Normal					0	135	289	27	109	80	0	0	0	0	0	0	99

Climate Division 5 - Powder and Tongue Drainages

Climate Division: Powder / Tongue (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	50.3	31.6	24.1	26.1	33.2	37.5	43.9	50.3	67.1	70.3	66.5	57.7	46.6
20th Century Average	44.6	31.1	22.4	19.6	23.8	31.1	41.2	50.8	60.2	68.2	66.5	55.9	43.0
Departure from Avegage	5.7	0.5	1.7	6.5	9.4	6.4	2.7	-0.5	6.9	2.1	0.0	1.8	3.6
Rank: Warm to Cold (122 yrs)	2	54	55	18	4	11	27	69	3	32	66	41	5
Rank: Cold to Warm (122 yrs)	120	68	67	104	119	112	96	54	120	91	57	82	117

Precipitation	0.73	0.55	0.51	0.43	0.74	1.37	2.90	1.64	0.74	0.87	1.06	2.86	14.40
20th Century Average	1.16	0.77	0.65	0.63	0.61	1.05	1.85	2.54	2.35	1.40	0.99	1.28	15.28
Percent of Average	63	71	78	68	121	130	107	65	31	62	110	223	94
Rank: Dry to Wet (122 yrs)	37	36	45	35	85	90	107	22	7	29	80	119	49
Rank: Wet to Dry (122 yrs)	85	86	77	87	38	33	16	101	116	94	43	4	73

Station Name:	Drought Conditions				Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
click on location			D0	D1
for graph	D2	D3		D4
Buffalo Airport	None				0.71	0.44	0.10	0.13	0.46	0.65	2.17	1.51	0.39	0.49	0.52	3.24	10.81
1981-2010 Normals					0.93	0.54	0.40	0.42	0.35	0.92	1.30	2.53	2.28	1.66	0.81	1.31	13.45
Percent of Normal					76	81	25	31	131	71	167	60	17	30	64	247	80

Sheridan Arpt	None				1.22	0.69	0.24	0.56	0.89	1.59	3.36	1.06	0.39	0.22	1.44	3.71	15.37
1981-2010 Normals					1.41	0.71	0.56	0.56	0.54	0.98	1.60	2.35	2.12	1.18	0.72	1.43	14.16
Percent of Normal					87	97	43	100	165	162	210	45	18	19	200	259	109


Kaycee	None				0.51	0.51	0.36	0.16	0.21	0.53	2.85	2.21	0.30	0.14	0.58	3.23	11.59
1981-2010 Normals					1.04	0.57	0.31	0.30	0.34	0.74	1.46	2.37	1.84	1.42	0.80	1.18	12.37
Percent of Normal					49	89	116	53	62	72	195	93	16	10	73	274	94
Snowfall					0.0	2.0	7.1	2.0	6.0	2.0	1.0	0.0	0.0	0.0	0.0	0.0	20.1
1981-2010 Normals					1.5	4.2	6.0	5.9	6.3	8.0	4.7	0.6	0.1	0.0	0.0	0.2	37.5
Percent of Normal					0	48	118	34	95	25	21	0	0	0	0	0	54

Climate Division 6 - Belle Fourche Drainage

Climate Division: Belle Fourche (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	49.4	31.8	24.6	26.0	33.2	38.3	43.6	51.5	68.4	71.2	66.9	58.6	47.0
20th Century Average	45.0	31.0	22.1	19.0	23.1	30.6	41.4	51.3	60.9	68.8	67.0	56.4	43.1
Departure from Avegage	4.4	0.8	2.5	7.0	10.1	7.7	2.2	0.2	7.5	2.4	-0.1	2.2	3.9
Rank: Warm to Cold (122 yrs)	12	52	45	16	4	8	35	55	2	29	64	37	3
Rank: Cold to Warm (122 yrs)	110	70	77	106	119	115	88	68	121	94	59	86	119

Precipitation	1.27	0.44	0.51	0.39	0.83	1.49	2.21	1.06	0.94	1.54	1.55	2.25	14.48
20th Century Average	1.14	0.69	0.64	0.59	0.59	0.98	1.75	2.66	2.83	1.84	1.33	1.32	16.36
Percent of Average	111	64	80	66	141	152	126	40	33	84	117	170	89
Rank: Dry to Wet (122 yrs)	85	36	52	36	97	102	87	10	8	55	80	104	38
Rank: Wet to Dry (122 yrs)	37	86	70	86	26	21	36	113	115	68	43	19	84

Station Name:

Drought
Conditions

Oct
2015

Nov
2015

Dec
2015

Jan
2016

Feb
2016

Mar
2016

Apr
2016

May
2016

Jun
2016

Jul
2016

Aug
2016

Sep
2016

Total for
Water Year

click on location

for graph

Gillette Airport

0.87

0.47

0.48

0.40

1.11

2.55

0.67

0.44

1.32

1.56

2.50

13.48

1981-2010 Normals

1.27

0.55

0.40

0.39

0.96

1.47

2.45

2.21

1.66

0.95

1.19

13.89

Percent of Normal

120

103

285

116

173

164

210

Climate Division 7 - Cheyenne and Niobrara Drainages

Climate Division: Cheyenne / Niobrara (Division Avgs)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	50.4	32.4	24.8	26.2	33.3	38.5	44.6	50.9	69.1	71.7	67.8	59.6	47.4
20th Century Average	45.9	31.8	23.0	20.3	24.6	32.1	42.5	52.4	62.5	70.3	68.4	57.6	44.3
Departure from Avegage	4.5	0.6	1.8	5.9	8.7	6.4	2.1	-1.5	6.6	1.4	-0.6	2.0	3.2
Rank: Warm to Cold (122 yrs)	8	56	47	20	5	11	33	83	4	40	71	42	4
Rank: Cold to Warm (122 yrs)	115	66	75	102	118	112	90	40	119	83	52	81	118

Precipitation	1.08	0.44	0.40	0.21	0.63	1.38	2.00	1.67	1.17	1.95	1.48	1.33	13.74
20th Century Average	0.95	0.55	0.48	0.42	0.46	0.76	1.68	2.53	2.34	1.78	1.21	1.14	13.16
Percent of Average	114	80	83	50	137	182	119	66	50	110	122	117	96
Rank: Dry to Wet (122 yrs)	78	51	51	22	90	112	86	34	22	84	90	80	50
Rank: Wet to Dry (122 yrs)	44	71	71	100	33	11	37	89	101	39	33	43	72

Climate Division 8 - Lower Platte Drainage

Climate Division: Lower Platte (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	51.4	32.8	25.5	26.6	32.8	37.1	43.1	49.3	66.8	70.1	66.0	58.8	46.7
20th Century Average	45.2	32.3	24.7	22.8	25.9	32.1	41.2	50.8	60.7	68.0	66.2	56.4	43.9
Departure from Avegage	6.2	0.5	0.8	3.8	6.9	5.0	1.9	-1.5	6.1	2.1	-0.2	2.4	2.8
Rank: Warm to Cold (122 yrs)	2	59	59	33	7	18	38	86	3	29	66	31	5
Rank: Cold to Warm (122 yrs)	120	63	63	89	116	105	85	37	120	94	57	92	117

Precipitation	1.49	1.00	0.84	0.62	0.79	2.19	3.40	2.49	0.66	0.64	1.32	1.07	16.51
20th Century Average	1.05	0.68	0.63	0.51	0.59	0.97	1.90	2.55	2.05	1.58	1.17	1.21	14.89
Percent of Average	142	147	133	122	134	226	179	98	32	41	113	88	111
Rank: Dry to Wet (122 yrs)	94	101	94	89	95	119	113	68	7	5	79	58	88
Rank: Wet to Dry (122 yrs)	28	21	28	33	28	4	10	55	116	118	44	65	34

Station Name:

Drought
Conditions

Oct
2015

Nov
2015

Dec
2015

Jan
2016

Feb
2016

Mar
2016

Apr
2016

May
2016

Jun
2016

Jul
2016

Aug
2016

Sep
2016

Total for
Water Year

click on location

for graph

Casper Airport

None

0.94

0.70

1.06

0.99

0.47

1.36

3.63

3.01

1.17

0.24

1.30

1.55

16.42

1981-2010 Normals

1.11

0.76

0.49

0.51

0.57

0.82

1.29

2.02

1.61

1.41

0.85

1.08

12.52

Percent of Normal

216

194

166

281

149

153

144

131

Snowfall

0.0

13.3

16.8

13.4

15.2

13.4

14.5

0.0

86.6

1981-2010 Normals

7.4

10.3

11.0

9.1

9.8

10.9

11.6

2.9

0.1

0.0

1.8

74.9

Percent of Normal

129

153

147

155

123

125

116

Cheyenne Arpt

None

1.82

1.11

0.85

0.48

0.72

2.33

3.13

2.03

2.08

1.08

1.05

0.80

17.49

1981-2010 Normals

0.93

0.59

0.49

0.33

0.47

1.05

1.78

2.34

2.19

1.95

1.48

15.94

Percent of Normal

196

188

173

145

153

222

176

110

Snowfall

10.7

15.1

8.9

11.1

24.9

19.7

1.6

0.0

92.0

1981-2010 Normals

5.0

8.0

8.4

5.9

7.9

11.3

10.2

2.3

0.0

1.3

60.3

Percent of Normal

134

180

151

141

220

193

153

Climate Division 9 - Wind River Drainage

Climate Division: Wind River (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	48.2	28.1	19.9	21.3	29.9	33.8	41.6	47.2	63.0	65.9	62.4	54.3	43.0
20th Century Average	41.8	27.9	19.5	17.3	22.0	29.0	38.3	48.0	57.0	64.7	62.8	52.9	40.1
Departure from Avegage	6.4	0.2	0.4	4.0	7.9	4.8	3.3	-0.8	6.0	1.2	-0.4	1.4	2.9
Rank: Warm to Cold (122 yrs)	2	65	58	30	5	15	25	72	2	43	72	42	6
Rank: Cold to Warm (122 yrs)	120	57	64	92	118	108	98	51	121	80	51	81	116

Precipitation	0.87	1.16	0.69	0.60	0.64	2.64	3.07	3.33	0.50	0.26	0.79	2.42	16.97
20th Century Average	1.20	0.96	0.84	0.93	0.81	1.26	1.89	2.25	1.67	1.04	0.88	1.19	14.92
Percent of Average	73	121	82	65	79	210	162	148	30	25	90	203	114
Rank: Dry to Wet (122 yrs)	47	84	47	33	43	119	113	100	13	2	68	114	97
Rank: Wet to Dry (122 yrs)	75	38	75	89	80	4	10	24	110	121	55	9	25

Station Name:	Drought Conditions				Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
click on location			D0	D1
for graph	D2	D3		D4
Lander Airport	None				0.88	1.20	0.48	0.42	0.50	4.59	4.61	5.03	0.57	T	0.52	1.68	20.48
1981-2010 Normals					1.29	0.86	0.58	0.41	0.58	1.16	1.87	2.20	1.27	0.78	0.61	1.05	12.66
Percent of Normal					68	140	83	102	86	396	247	229	45	0	85	160	162
Snowfall					0.0	19.0	8.8	5.3	3.9	33.3	4.3	T	0.0	0.0	0.0	0.0	74.6
1981-2010 Normals					9.8	13.1	10.1	7.6	10.3	16.1	16.8	4.8	0.1	0.0	0.0	2.7	91.4
Percent of Normal					0	145	87	70	38	207	26	0	0	0	0	0	82

Riverton Airport	None				0.33	1.00	0.08	0.40	0.28	2.13	3.31	2.77	0.39	T	0.22	1.98	13.11
1981-2010 Normals					0.89	0.50	0.32	0.24	0.27	0.55	1.30	1.72	1.28	0.89	0.57	0.90	9.43
Percent of Normal					37	200	25	167	104	387	255	161	30	0	44	220	139
Snowfall					0.0	18.1	2.2	5.3	2.6	21.5	12.7	T	0.0	0.0	0.0	0.0	62.4

Dubois	None				1.29	0.51	0.22	0.23	0.13	1.05	1.01	2.39	0.68	0.58	0.48	2.61	11.18
1981-2010 Normals					0.81	0.57	0.28	0.24	0.38	0.40	1.10	1.64	1.28	1.11	0.86	1.24	9.91
Percent of Normal					159	89	79	96	34	263	92	146	53	52	56	210	113
Snowfall					1.0	9.5	4.5	4.0	1.5	14.7	2.0	T	0.0	0.0	0.0	1.0	38.2
1981-2010 Normals					3.0	5.8	5.1	3.9	5.7	6.0	8.5	3.9	0.6	0.0	0.0	2.6	45.1
Percent of Normal					33	164	88	103	26	245	24	0	0	0	0	38	85

Riverton	None				0.38	0.99	0.09	0.49	0.19	2.70	3.82	2.59	0.12	0.13	0.22	1.75	13.47
1981-2010 Normals					0.85	0.41	0.24	0.28	0.33	0.56	0.98	1.45	1.21	0.78	0.50	0.83	8.42
Percent of Normal					45	241	38	175	58	482	390	179	10	17	44	211	160
Snowfall					0.0	19.0	2.4	7.7	2.7	22.1	9.0	T	0.0	0.0	0.0	0.0	62.9
1981-2010 Normals					3.7	4.3	4.8	4.8	6.0	5.9	6.1	1.2	0.0	0.0	0.0	0.3	37.1
Percent of Normal					0	442	50	160	45	375	148	0	0	0	0	0	170

Climate Division 10 - Upper Platte Drainage

Climate Division: Upper Platte (Division Averages)	Oct 2015	Nov 2015	Dec 2015	Jan 2016	Feb 2016	Mar 2016	Apr 2016	May 2016	Jun 2016	Jul 2016	Aug 2016	Sep 2016	Total for Water Year
Average Temperature	48.8	29.6	20.5	20.8	27.8	32.9	39.9	46.3	63.3	66.2	62.5	54.8	42.8
20th Century Average	41.8	28.3	20.2	18.3	21.7	28.0	37.5	47.4	57.1	64.5	62.6	52.9	40.0
Departure from Avegage	7.0	1.3	0.3	2.5	6.1	4.9	2.4	-1.1	6.2	1.7	-0.1	1.9	2.8
Rank: Warm to Cold (122 yrs)	1	40	59	38	13	18	34	78	2	27	70	37	8
Rank: Cold to Warm (122 yrs)	121	73	63	84	110	105	89	45	121	96	53	86	114

Precipitation	0.85	0.99	0.90	0.95	0.69	1.93	2.62	2.46	0.51	0.33	0.41	1.36	14.00
20th Century Average	1,09	0.83	0.82	0.80	0.83	1.06	1.58	1.78	1.27	1.10	0.95	1.08	13.19
Percent of Average	78	119	110	119	83	182	166	138	40	30	43	126	106
Rank: Dry to Wet (122 yrs)	50	87	78	90	45	116	115	98	21	3	12	89	80
Rank: Wet to Dry (122 yrs)	72	35	44	32	78	7	8	25	102	120	111	34	42

Station Name:

Drought
Conditions

Oct
2015

Nov
2015

Dec
2015

Jan
2016

Feb
2016

Mar
2016

Apr
2016

May
2016

Jun
2016

Jul
2016

Aug
2016

Sep
2016

Total for
Water Year

click on location

for graph

Jeffrey City

None

0.08

0.78

0.30

0.45

0.46

1.44

2.86

2.92

0.23

0.04

0.63

1.93

12.12

1981-2010 Normals

0.91

0.59

0.42

0.31

0.41

0.86

1.27

1.85

1.15

0.89

0.60

0.80

10.06

Percent of Normal

132

145

112

167

225

158

105

241

120

Snowfall

0.0

10.0

4.0

4.1

4.0

17.0

19.0

1.0

0.0

59.1

1981-2010 Normals

7.3

6.6

5.5

4.6

6.7

9.4

10.2

4.9

0.4

0.0

1.4

57.0

Percent of Normal

152

181

186

104

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