Pacific Storm Impacting Hawaii; Atmospheric River Brings Precipitation to the Pacific Northwest and Northern California

A strong weather system will bring the potential for flash flooding, severe thunderstorms, strong to locally damaging non-thunderstorm winds, and high elevation snow to the Hawaiian Islands. Precipitation will overspread most of the eastern third of the country. A prolonged atmospheric river will bring low elevation rain and mountain snow to the Pacific Northwest and California into the Rockies. Read More >

Worland Climate Summary Banner

Temperatures | Wind |Precipitation

...Highlights of 2015...

Annual - ...13th warmest year on record (1960-2015), normal precipitation, 5 daily record highs broken or tied, 6 record lows broken or tied.
Monthly Temperatures: 2nd warmest October, 5th warmest June, 7th warmest March and September; 9th coldest July, 10th coldest May on record.
Montly Precipitation: Driest March (ties 2004), 8th driest September, 3rd wettest February, 6th wettest May on record.

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	25.8	40.1	57.4	61.6	65.3	86.7	87.7	88.4	83.7	67.9	42.4	30.4	61.5
Mean High (1981-2010 Normals)	30.6	37.4	50.5	60.1	69.9	80.3	89.0	87.4	74.5	60.3	44.2	30.6	59.7
Average Low	4.1	18.5	25.6	31.7	42.5	54.5	54.1	51.8	44.2	35.9	15.4	4.7	31.9
Mean Low (1981-2010 Normals)	3.6	10.2	22.4	31.2	40.9	49.1	55.0	52.8	42.7	30.7	17.1	4.5	30.1
Average Temp	15.0	29.3	41.5	46.6	53.9	70.6	70.9	70.1	63.9	51.9	28.9	17.5	46.7
Mean Temp (1981-2010 Normals)	17.1	23.8	36.5	45.7	55.4	64.7	72.0	70.1	58.6	45.5	30.6	17.5	44.9
Departure from Normal	-2.1	5.5	5.0	0.9	-1.5	5.9	-1.1	0.0	5.3	6.4	-1.7	0.0	1.8
Rank - Warmest to Coldest 56 years of record (1960-2015)	30	14	7	24	46	5	47	34	7	2	44	39	13
Highest Daily Maximum	39	57	80	81	81	99	99	101	95	86	69	47	101
Date of Occurrence	29	13	28	14	31	28	26	14	1,2	10	1	8	8/14
Lowest Daily Minimum	-18	-3	-2	20	24	47	42	35	35	21	-14	-11	-18
Date of Occurrence	1	23	4	3	11	2	29	23	19	28,29	27	27	1/1
Number of Days with:
Maximum >= 100°	0	0	0	0	0	0	0	1	0	0	0	0	1
Maximum >= 90°	0	0	0	0	0	10	18	16	8	0	0	0	52
Maximum <= 32°	23	9	3	0	0	0	0	0	0	0	8	17	60
Minimum <= 32°	31	28	24	16	1	0	0	0	0	12	27	31	170
Minimum <= 0°	10	2	1	0	0	0	0	0	0	0	5	12	30
Record Highs Set or Tied	0	0	0	0	0	0	0	0	4	1	0	0	5
Record Lows Set or Tied	0	0	0	0	1	0	2	2	0	0	1	0	6
Only 40 years on record without missing data for annual rankings or 2015 was 13 warmest of the 40 years with complete data.

Temperature Ranks and Records:

Daily Records:

Max:

September: 92 on the 13^th, 91 on the 14th (tie), 90 on the 24th, 93 on the the 26^th.
October: 86 on the the 10^th.

Min:

May: 24 on the 11th.
July: 42 on the 2nd, 43 on the 28th.
August: 41 on the 19th, 35 on the 23rd.

November: -14 on the 27th (tie).

Top Ten Warmest Years on Record
Rank	Year	Average Temperature °F
1	1981	49.4
2	1999	48.9
3	1988	48.6
4	1994, 1987	48.2
6	1998	48.1
7	2006	47.9
8	1966	47.8
9	1986	47.5
10	1980	47.0
13	2015	46.7

Top Ten Coldest Years on Record
Rank	Year	Average Temperature °F
1	1978	41.9
2	1993	42.7
3	2014	43.5
4	1975	43.6
5	1979	44.2
6	2009, 2008	44.3
8	1982, 1972	44.5
10	2013, 1996	44.7
27	2015	46.7

Wind Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average Speed (MPH)	4.0	6.2	6.2	7.9	7.2	6.0	6.0	6.2	5.9	5.2	4.6	4.4	5.8
Maximum 3-sec Gust	36	38	56	46	39	56	53	50	44	43	47	39	56
Direction (tens of degrees)	32	33	28	36	33	28	24	34	16	22	35	10	28
Date of Occurrence	8	25	28	18	30	1	27	17	4	11	18	9	6/1

Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.23	0.54	T	0.35	3.06	1.06	0.44	0.47	0.13	0.33	0.68	0.28	7.57
Mean Precip (1981-2010 Normals)	0.23	0.19	0.46	0.86	1.42	1.15	0.71	0.43	0.85	0.69	0.35	0.23	7.57
Departure from Normal	0.00	0.35	-0.46	-0.51	1.64	-0.09	-0.27	0.04	-0.72	-0.36	0.33	0.05	0.00
Percent of Normal	100	284	0	41	215	92	62	109	15	48	194	122	100
Rank - Driest to Wettest 56 years of Record (1960-2015)	30	54	1	11	49	29	33	31	8	23	46	35	27
Greatest 24 Hour Total	0.12	0.30	T	0.10	1.05	0.71	0.19	0.23	0.05	0.30	0.29	0.24	1.05
Dates of Occurrence	28	15	3+	23	14-15	10	15	26-27	17	3-4	3-4	14-15	5/14-15
Number of Days with:
Precipitation >= 0.01	4	5	0	5	19	7	6	8	5	4	6	4	73
Precipitation >= 0.10	1	2	0	1	10	2	1	2	0	1	2	1	23
Precipitation >= 1.00	0	0	0	0	1	0	0	0	0	0	0	0	1
Daily Precipitation Records Set or Tied	1	2	0	0	1	0	2	1	0	0	2	1	10

Precipitation Ranks and Records:

One Day PrecipitatioRecords:

January: 0.12 on the 28th.
February: 0.30 on the 15th, 0.12 on the 21st.
May: 1.04 on the 15th.
July: 0.19 on the 15th, 0.03 on the 27th (tie).
August: 0.21 on the 27^th.
November: 0.29 on the 4^{th, 0.06 on the 20th (tie)}.
December: 0.15 on the 15th ^(tie).

Top Ten Driest Years on Record
Rank	Year	Precpitation (inches)
1	2012	2.94
2	1996	3.77
3	2006	3.91
4	2001	4.03
5	1970	4.21
6	1974	4.50
7	2007	4.62
8	1977	5.39
9	1969	5.48
10	1972	5.75
27	2015	7.57

Top Ten Wettest Years on Record
Rank	Year	Precipitation (inches)
1	1967	11.29
2	1993	11.16
3	1978	11.12
4	1998	11.11
5	1997	10.94
6	2011	10.67
7	1975	10.05
8	1992	9.98
9	1991	9.84
10	1995	9.32
30	2015	7.57

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Pacific Storm Impacting Hawaii; Atmospheric River Brings Precipitation to the Pacific Northwest and Northern California

Worland 2015 Annual Climate Summary