Casper 2016 Annual Climate Summary

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...Highlights of 2016...

Annual: 17th warmest year on record (1939-2016), 10th wettest year on record with 124 percent of normal precipitation, 109 percent of normal annual snowfall. Highest wind gust was 66 mph on February 18th.
Seasonal: 5th wettest Spring (March, April, May) on record.
Monthly Temperatures: 8th warmest June, 10th warmest October, 3rd warmest November on record. 7th coldest December on record.
Monthly Precipitation: 6th wettest January, 4th wettest April, 3rd wettest December on record. 5th driest July and October on record.
Monthly Snowfall: 10 snowiest February, 4th snowiest December on record.
Snowiest Christmas: 6.1" of snow on Christmas Day.

Temperature

Wind

Precipitation

Snowfall

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	33.0	42.7	50.8	55.6	63.4	86.2	90.4	84.9	74.3	66.6	55.0	29.4	61.0
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	18.4	20.3	23.6	30.3	36.1	47.7	52.1	48.4	43.3	34.5	26.6	6.2	32.3
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	25.7	31.5	37.2	43.0	49.8	67.0	71.3	66.7	58.8	50.6	40.8	17.8	46.7
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	1.0	4.8	2.0	0.3	-2.4	4.8	0.8	-2.3	0.9	5.4	7.6	-4.0	1.3
Rank: Coldest to Warmest 77 years of record (P.O.R 12/1939-2016)	47	64	62	39	17	70	40	14	37	67	75	7	60
Highest Daily Maximum	43	60	67	79	81	100	97	96	93	77	70	50	100
Date of Occurrence	28,29	27	21	23	21	21	25	2.3	1	14*	15	24	6/21
Lowest Daily Minimum	3	-11	3	16	27	31	43	38	30	15	10	-33	-33
Date of Occurrence	31	2	19	1	12	1	14	21	10	12	18	8	12/8
Number of Days with:
Maximum >= 90°	0	0	0	0	0	9	19	10	1	0	0	0	39
Maximum <= 32°	13	6	0	0	0	0	0	0	0	0	1	14	34
Minimum <= 32°	31	25	26	21	7	1	0	0	1	12	23	31	178
Minimum <= 0°	0	2	0	0	0	0	0	0	0	0	0	8	10
Record Highs Set or Tied	0	0	1	0	0	2	0	0	2	1	2	0	8
Record Lows Set or Tied	0	0	0	0	1	0	0	2	1	0	0	2	6
* Multiple day occurrence

Temperature Ranks and Records:

Daily Records:

Max:

March: 64 on the 5th.
June: 95 on the 11th, 100 on the 21st.
September: 91 on the 26t^{h, 89 on the 27th.}

October: ^{74 on the 27th (tie).}

November: ^{69 on the 9th, 70 on the 15th.}

Min:

May: 30 on the 24th (tie).
August: 38 on the 20th, 38 on the 21st.

September: 30 on the 10th (tie).

December -28 on the 7th, -33 on the 8th.

Warmest Months of June on Record
Rank	Year	Average Temperature °F
1	1988	72.5
2	1977	69.3
3	1994	68.4
4	1956	68.3
5	2012	67.9
6	2006	67.7
7	1986	67.4
8	2016	67.0
9	1959	66.8
11	2015, 1940	66.4

Warmest Months of October on Record
Rank	Year	Average Temperature °F
1	1963	54.6
2	1950	52.2
3	1947	52.1
4	1940	52.0
5	1965	51.7
6	2015	51.4
7	1962	51.3
8	1992, 1953	50.7
10	2016, 1944	50.6

Warmest Months of November on Record
Rank	Year	Average Temperature °F
1	1999	43.7
2	1949	42.7
3	2016	40.8
4	1954	40.2
5	1962	39.9
6	1965	39.8
7	2012	39.3
8	1953	39.2
9	1981, 1941	39.0

Coldest Months of December on Record
Rank	Year	Average Temperature °F
1	1983	10.9
2	1978	13.2
3	2009	15.6
4	1990	15.8
5	1967	17.3
6	1972	17.7
7	2016	17.8
8	1968	18.8
9	2008	19.2
10	2000	19.9

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	2015, 2006, 1999	47.1
17	2016	46.7

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
60	2016	46.7


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

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Wind Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average Speed (MPH)	15.5	15.8	13.4	11.4	10.3	8.7	10.1	9.1	10.8	13.3	13.1	15.0	12.2
Maximum 3-sec Gust	50	66	56	55	52	58	59	50	46	61	46	64	66
Direction	220	210	280	240	240	280	240	230	240	250	230	210	210
Date of Occurrence	29	18	14	14	24	13	6	11	14	3	19	27	2/18

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Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.99	0.47	1.36	3.63	3.01	1.17	0.24	1.30	1.55	0.16	0.38	1.31	15.57
Mean Precipitation (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	0.48	-0.10	0.54	2.34	0.99	-0.44	-1.17	0.45	0.47	-0.95	-0.38	0.82	3.05
Percent of Normal	194	82	166	281	149	73	17	153	144	14	50	216	124
Rank - Driest to Wettest 77 years (P.O.R 12/1939-2016)	71	32	64	74	62	39	4	67	65	4	21	75	68
Greatest 24-HR Total	0.41	0.30	0.84	1.58	1.13	0.74	0.08	0.68	0.45	0.08	0.24	0.43	1.58
Dates of Occurrence	30-31	1-2	29-30	23-24	6-7	12-13	29	24-25	4	17	21-22	25-26	4/23-24
Number of Days with:
Precipitation >= 0.01	9	7	8	11	9	6	5	6	10	6	4	10	91
Precipitation >= 0.10	4	1	4	5	8	2	0	4	7	0	1	3	39
Precipitation >= 1.00	0	0	0	2	0	0	0	0	0	0	0	0	2
Days with Thunderstorms	0	0	0	2	8	9	6	7	5	2	0	0	39
Daily Precipitation Records Set or Tied	2	0	0	2	1	0	0	1	0	0	0	3	7

Precipitation Ranks and Records:

One Day Precipitation Records:

January: 0.15" on the 7th, 0.33" on the 30th.
April: 1.50" on the 24th, 1.18" on the 26th.
May: 0.92" on the 6th.
August: 0.29" on the 24th.

Wettest Months of January on Record
Rank	Year	Precipitation (inches)
1	1987	1.42
2	1949	1.36
3	1944	1.30
4	1984	1.19
5	2009	1.08
6	2016, 1972	0.99
8	1996	0.94
9	1962	0.85
10	1995	0.84

Wettest Months of April on Record
Rank	Year	Precipitation (inches)
1	1941	5.75
2	1974	3.92
3	1973	3.86
4	2016	3.63
5	1971	3.40
6	1964	3.09
7	2013	2.54
8	1957	2.45
9	1993	2.37
10	1983	2.28

Wettest Springs (March, April, May) on Record
Rank	Year	Precipitation (inches)
1	1971	10.16
2	1995	8.47
3	1978	8.44
4	1941	8.39
5	2016	8.00
6	1957	7.21
7	1975	6.86
8	1991	6.62
9	2008	6.22
10	2015	6.19

Wettest Months of December on Record
Rank	Year	Precipitation (inches)
1	1982	3.71
2	2010	1.36
3	2016	1.27
4	2014	1.25
5	2013, 1978	1.20
7	2015	1.06
8	1985	1.05
9	1955	1.04
10	2009	0.97

Driest Montth of July on Record
Rank	Year	Precipitation (inches)
1	1991	0.09
2	1971	0.11
4	2000	0.22
5	2016, 1999	0.24
7	1959, 1955	0.27
9	1989	0.28
10	1943	0.29

Driest Montth of October on Record
Rank	Year	Precipitation (inches)
1	1965	0.00
2	1958	0.02
4	1988	0.12
5	2016, 1953	0.16
7	1992	0.22
9	1964	0.23
10	1999	0.24

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
68	2016	15.57

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	2016	15.57


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

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Snow Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	13.4	15.2	13.4	14.5	0.0	0.0	0.0	0.0	0.0	T	3.2	22.2	81.9
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	4.3	5.4	2.5	2.9	-2.9	-0.1	0.0	0.0	-1.8	-7.4	-7.1	11.2	7.0
Percent of Normal	143	155	123	125	0	0	0	0	0	0	31	202	109
Rank - Least to Most 77 years (P.O.R 12/1939-2016)	62	67	53	53	1*	NA	NA	NA	1*	10	10	75	53
Greatest 24-HR Total	4.5	9.2	9.7	9.9	0.0	0.0	0.0	0.0	0.0	T	1.4	7.0	9.9
Dates of Occurrence	30	2	30	24	NA	NA	NA	NA	NA	11	22	5	4/24
Number of Days with:
Snowfall >= 1.0 inch	6	3	2	3	0	0	0	0	0	0	1	5	20
Daily Snowfall Records Set or Tied	1	1	1	1	0	0	0	0	0	0	0	3	7
* 23 months of May, 48 months of September on record with no snowfall.

Snowfall Ranks and Records:

One Day Snowfall Records (inches):

January: 4.5" on the 30th.

February: 9.2" on the 1st.

March: 9.7" on the 30th.
April: 9.9" on the 26th.

December: 7.0" on the 5th, 5.2" on the 16th, 6.1" on the 25th (Christmas Day).

Snowiest Months of February on Record
Rank	Year	Snowfall (inches)
1	1952	23.8
2	1987	22.7
3	1989, 1955	21.5
5	2004	18.9
6	1953	18.5
7	1995	16.9
8	1976	16.1
9	2006	16.0
10	2016, 1947	15.2

Snowiest Months of December on Record
Rank	Year	Snowfall (inches)
1	1982	62.8
2	1978	25.7
3	1997	23.8
4	2016	22.2
5	2009	19.5
6	2014, 1967	17.8
8	2015, 1977	16.8
10	1968	16.4

Snowiest Christmas Days on Record
Rank	Year	Snowfall (inches)
1	2016	6.1
2	1988	5.6
3	2014	3.7
4	2009, 1973	2.2
6	1939	2.0
7	1941	1.5
8	2007	1.4
9	1943	1.0
10	1964	0.8

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
25	2016	81.9



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

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Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Casper 2016 Annual Climate Summary