Cold Temperatures Across the Northern High Plains; Winter Storms to Impact the Central Plains and Mid-Atlantic on Tuesday.

Arctic high pressure will usher in well below normal temperatures across the northern High Plains. Lake effect snow will drop up to a foot of snow downwind of Lake Ontario today. Two winter storms will begin to bring snow and a wintry mix to the Central Plains and the Mid-Atlantic by mid-day Tuesday. Heavy rain will create mainly localized areas of flash flooding in the Mid-South on Tuesday. Read More >

Casper Climate Summary Banner

Temperatures | Wind |Precipitation| Snowfall

...Highlights of 2014...

2014 - Slightly cooler than normal, near normal or 97 percent of annual precipitation, above normal or 112 percent of annual snowfall
November - A Month of Extremes: tied an all-time record high for November on the 1st and set a new all-time record low for the month on the 12th.
Early First Freeze: Two new record lows so early in the season set on September 11th and 12th.
3rd coldest February, 9th coldest November (over last 75 years, period of record 1939-2014).
5th wettest March, 4th driest May, 3rd wettest December
5th snowiest December

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	33.7	36.1	47.0	57.0	68.4	77.2	88.6	84.2	76.6	66.8	41.3	38.2	59.2
Mean High (1981-2010 Normals)	35.2	37.8	47.9	56.8	67.1	78.8	88.1	86.4	74.3	59.4	44.7	34.2	59.3
Average Low	14.2	6.3	23.7	28.5	37.3	42.9	51.9	51.0	42.2	33.5	15.9	18.7	30.5
Mean Low (1981-2010 Normals)	14.3	15.7	22.4	28.6	37.2	45.7	53.0	51.5	41.4	31.0	21.6	13.5	31.4
Average Temperature	24.0	19.0	35.4	42.7	52.8	60.1	70.3	67.6	59.4	50.1	28.6	28.5	44.9
Mean Average Temperature (1981-2010 Normals)	24.7	26.7	35.2	42.7	52.2	62.2	70.5	69.0	57.9	45.2	33.2	23.8	45.4
Departure from Normal	-0.7	-7.7	0.2	0.0	0.6	-2.1	-0.2	-1.4	1.5	4.9	-4.6	4.7	-0.5
Rank - Coldest to Warmest 75 years of record (P.O.R 12/1939-2014)	42	3	46	37	36	13	26	18	43	63	9	57	29
Highest Daily Maximum	43	56	64	74	92	92	100	95	92	77	72	60	100
Date of Occurrence	13,19	16	30	18	28	26	23	12	18	25	1	12	7/23
Lowest Daily Minimum	-24	-26	-4	10	22	36	38	41	25	20	-27	-16	-27
Date of Occurrence	5	6	1	14	1	5,9,15	2	24	12	30	12	30	11/12
Number of Days with:
Maximum >= 90°	0	0	0	0	1	2	14	7	4	0	0	0	28
Maximum <= 32°	10	12	3	1	0	0	0	0	0	0	8	9	43
Minimum <= 32°	31	28	28	24	9	0	0	0	5	13	25	27	190
Minimum <= 0°	4	11	2	0	0	0	0	0	0	0	6	3	29
Record Highs Set or Tied	0	0	0	0	1	0	1	0	3	2	2	3	12
Record Lows Set or Tied	1	2	0	1	0	0	0	0	2	0	3	0	9

Temperature Ranks and Records:

Daily Records:

Max:

May: 92 on the 28^th.
July: 100 on the 23^rd (tie).
September: 92 on the 18^th, 90 on the 25^th, 90 on the 26^th (tie).
October: 77 on the 25^th, 70 on the 31^st (tie).
November: 72 on the 1^st (also ties the all-time record high November), 58 on the 29^th (tie).
December: 58 on the 11^th (tie), 60 on the 12^th, 57 on the 13^th.
Record High So Early in the Season: 92 on May 28^th:

Min:

January: -24 on the 5^th.
February: -26 on the 6^th, -16 on the 25^th.
Apil: 12 on the 13^th
September: 26 on the 11^th, 25 on the 12^th.
November: -27 on the 12^th(also an all-time record low for November), 25 on the 12^th.

Record Lows So Early in the Season: 26 on September 11^th, 25 on September 12^th, -27 on November 12^th.

Coldest Months of February on Record
Rank	Year	Average Temperature °F
1	1989	11.9
2	1960	18.5
3	2014	19.0
4	1993	19.6
5	1942, 1985	19.7
7	1955	20.2
8	2011	20.6

Top Ten Warmest Years on Record
Rank	Year	Average Temperature °F
1	1994	49.1
2	2012	48.7
3	1954	48.3
4	1981	48.1
5	1992	48.0
6	1940, 1953, 1963	47.3
9	1999, 2006	47.1
47	2014	44.9

Top Ten Coldest Years on Record
Rank	Year	Average Temperature °F
1	1985	42.5
2	1951	43.1
3	1978	43.2
4	1964	43.5
5	1975	43.6
6	2009, 1979, 1968, 1949	43.8
10	1971	43.9
29	2014	44.9


Average Annual Temperature for Period of Record - Click on Graph to Enlarge

Wind Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average Speed (MPH)	15.5	12.4	13.7	11.5	10.6	10.1	8.4	8.5	10.0	10.8	12.9	13.0	11.4
Maximum 3-sec Gust	60	54	56	51	51	53	46	48	64	48	57	48	64
Direction (tens of degrees)	23	24	25	23	24	30	04	30	25	21	24	21	25
Date of Occurrence	11	19	17	18	31	4	15	30	8	15	29	24	9/8

Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.74	0.74	1.64	1.15	0.49	1.35	1.17	1.10	0.64	1.05	0.81	1.25	12.13
Mean Precip (1981-2010 Normals)	0.51	0.57	0.82	1.29	2.02	1.61	1.41	0.85	1.08	1.11	0.76	0.49	12.52
Departure from Normal	0.23	0.17	0.82	-0.14	-1.53	-0.26	-0.24	0.25	-0.44	-0.06	0.05	0.76	-0.39
Percent of Normal	145	130	200	89	24	84	83	129	59	95	107	255	97
Rank - Driest to Wettest 75 years (P.O.R 12/1939-2014)	60	58	71	32	4	46	44	62	34	45	51	73	46
Greatest 24-HR Total	0.26	0.17	0.32	0.29	0.21	0.52	1.01	0.46	0.43	0.47	0.37	0.73	1.01
Dates of Occurrence	14	25	7	26-27	15-16	27	15-16	4-5	28-29	12	10-11	14-15	7/15-16
Number of Days with:
Precipitation >= 0.01	10	11	12	10	8	7	6	12	5	4	8	9	102
Precipitation >= 0.10	2	3	7	6	2	5	2	4	3	3	2	4	43
Precipitation >= 1.00	0	0	0	0	0	0	0	0	0	0	0	0	0
Days with Thunderstorms	0	0	0	0	2	9	3	5	4	0	0	0	23
Daily Precipitaton Records Set or Tied	1	0	1	0	0	1	0	0	0	1	1	1	6

Precipitation Ranks and Records:

One Day Precipitation Records:

January: 0.26 on the 14^th (tie).
March: 0.32 on the 7^th.
June: 0.52 on the 27^th.
October: 0.47 on the 12^th.
November: 0.35 on the 10^th.
December: 0.49 on the 14^th.

Wettest Months of March on Record
Rank	Year	Precipitation (inches)
1	1954	2.43
2	1983	2.29
3	1958	2.27
4	1975	2.01
5	2014	1.64
6	1984	1.59

Driest Montths of May on Record
Rank	Year	Precpitation (inches)
1	1966	0.30
2	1994	0.37
3	2009	0.43
4	2014	0.49
5	2003	0.51
6	1960	0.56

Wettest Months of December on Record
Rank	Year	Precipitation (inches)
1	1982	3.71
2	2010	1.36
3	2014	1.25
4	2013, 1978	1.20
6	1985	1.05
7	1955	1.04

Top Ten Driest Years on Record
Rank	Year	Precpitation (inches)
1	1988	6.56
2	2001	6.76
3	2002	7.05
4	1960	7.34
5	1954	7.70
6	2012	7.88
7	1963	7.90
8	1966	8.14
9	1943	8.91
10	1999, 1956	8.93
46	2014	12.13

Top Ten Wettest Years on Record
Rank	Year	Precipitation (inches)
1	1982	20.48
2	1995	18.94
3	1983	18.41
4	1978	17.64
5	1941	16.24
6	1957	16.12
7	1986	15.92
8	1993	15.91
9	2009	15.77
10	1947	15.40
30	2014	12.13


Annual Precipitation for Period of Record - Click on Graph to Enlarge

Snow Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	14.2	11.5	18.7	5.8	0.9	0.0	0.0	0.0	1.0	3.2	10.6	17.8	83.7
Mean Snowfall (1981-2010 Normals)	9.1	9.8	10.9	11.6	2.9	0.1	0.0	0.0	1.8	7.4	10.3	11.0	74.9
Departure from Normal	5.1	1.7	7.8	-5.8	-2.0	-0.1	0.0	0.0	-0.8	-4.2	0.3	6.8	8.8
Percent of Normal	156	117	172	50	31	0	0	0	56	43	103	162	112
Rank - Least Snowiest to Snowiest 75 Years (P.O.R 12/1939-2014)	64	51	65	24	33	NA	NA	NA	58	26	48	72	54
Greatest 24-HR Total	4.0	3.6	3.0	3.1	0.9	0.0	0.0	0.0	1.0	2.1	4.3	5.0	5.0
Dates of Occurrence	14	25	1	13	11	NA	NA	NA	11	2	10	14	12/14
Number of Days with:
Snowfall >= 1.0 inch	6	4	8	2	0	0	0	0	1	2	3	5	31
Daily Snowfall Records Set or Tied	0	0	0	0	0	0	0	0	0	0	0	1	1

Snowfall Ranks and Records:

One Day Snowfall Records (inches):

December: 5.0 on the 14^th.

Snowiest Months of December on Record
Rank	Year	Snowfall (inches)
1	1982	62.8
2	1978	25.7
3	1997	23.8
4	2009	19.5
5	2014, 1967	17.8
7	1977	16.8
8	1968	16.4
9	2007, 1975	16.1

Top Ten Snowiest Years on Record
Rank	Year	Snowfall (inches)
1	1982	137.6
2	1975	124.0
3	1984	121.2
4	1973	118.3
5	1983	114.2
6	1978	112.7
7	2013	107.5
8	1955	103.3
9	1979	103.0
10	1985	101.0
22	2014	83.7



Annual and Seasonal Snowfall for Period of Record - Click on Graph to Enlarge

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Cold Temperatures Across the Northern High Plains; Winter Storms to Impact the Central Plains and Mid-Atlantic on Tuesday.

Casper 2014 Annual Climate Summary