Western and Central Wyoming

Weather Forecast Office

Casper 2025 Annual Summary

...Highlights of 2025...

Annual:
- 10th Warmest year on record at 47.2 degrees, 1.6 degrees above normal.
- 40th Wettest year with 12.05 inches, 98.6% of normal.
- 1st Least Snowiest year with 34.8 inches, 48.5% of normal. (Previous record was 1943 with 38 inches)
- 3rd Least Snowiest snowfall season (July 2024-June 2025) with 42.4 inches.
- Highest wind gust was 78 mph on December 17th. There was a gust to 70 mph on February 5th.
Monthly Temperatures: 8th warmest November and 1st warmest December
Monthly Precipitation: 6th driest February and 6th wettest September
Monthly Snowfall: 3rd least snowy February,

Temperature

Wind

Precipitation

Snow

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	28.6	39.6	51.3	57.4	67.8	83.5	90.5	87.2	77.5	61.9	54.1	48.1	62.3
Mean High (1991-2020 Normals)	35.2	37.8	48.8	56.3	66.8	79.6	89	86.7	75.6	59.7	45.9	34.7	59.7
Average Low	10.7	20.6	23.3	28.7	35.0	47.3	53.2	51.3	45.4	32.7	24.7	25.6	32.0
Mean Low (1991-2020 Normals)	15	15.4	22.7	28.2	37.1	45.4	53	51.4	42.2	30.9	22	14.8	31.5
Average Temperature	18.5	25.1	37.4	41.4	53.0	64.3	71.9	69.2	61.5	47.3	39.4	36.9	47.2
Mean Average Temperature (1991-2020 Normals)	25.1	26.6	35.8	42.3	52	62.5	71	69	58.9	45.3	34	24.8	45.6
Departure from Normal	-6.6	-1.5	1.6	-0.9	1	1.8	0.9	0.2	2.6	2.0	5.4	12.1	1.6
Rank: 86 years of record (P.O.R 12/1939-2025)	12	35	72	34	47	59	59	44	68	50	79	86	77

Highest Daily Maximum	44	61	76	80	84	96	100	99	99	83	70	63	100
Date of Occurrence	30,31	4	27	11	12	28	9,14	20	10	3	2	23,24	7/9,7/14
Lowest Daily Minimum	-25	-12	8	13	28	32	41	39	32	16	-15	-10	-25
Date of Occurrence	20	19	5	5,14	22	23	12	9	6	28	29	28	1/20
Number of Days with:	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Maximum >= 90°	0	0	0	0	0	10	19	12	1	0	0	0	42
Maximum <= 32°	20	0	2	1	0	0	0	0	0	0	2	3	28
Minimum <= 32°	31	25	28	23	7	1	0	0	1	16	22	24	178
Minimum <= 0°	5	8	0	0	0	0	0	0	0	0	2	1	16
Record High Temperatures Set or Tied	0	2	2	2	0	1	1	1	0	0	1	10	20
Record Low Temperatures Set or Tied	1	0	0	0	0	1	0	1	1	0	1	0	5

Temperature Ranks and Records:

Daily Records:

Record High Temperatures:

  February: 57 on the 2nd, and 61 on the 4th (tie 1963)

March: 75 on the 26th, and 76 on the 27th

April: 80 on the 11th (new record for earliest 80-degree day), and 77 on the 12th.

June: 92 on the 1st

July: 100 on the 9th

August: 99 on the 25th

November: 67on the 16th (tie)

December: 57 on the 21st (tie), 61 on the 22nd, 63 on the 23rd, 63 on the 24th, and 61 on the 25th

Record Low Temperatures:

  January: -25 on the 20th
June: 32 on the 23rd

August: 39 on the 9th

September: 32 on the 6th

November: -15 on the 29th

Warmest Months of November on Record
Rank	Year	Average Temperature °F
1	1999	43.7
2	1949	42.7
3	2016	40.8
4	2021	40.3
5	1954	40.2
6	1962	39.9
7	1965	39.8
8	2025/2012	39.4
10	1953	39.2

Warmest Months of December on Record
Rank	Year	Average Temperature °F
1	2025	36.9
2	1980	34.3
3	2024	33.4
4	1946	33.0
5	2023	32.0
6	1957/1994	31.8
8	1950	31.2
9	1962	30.4
10	1959	30.3

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	2024	47.6
7	1940, 1953, 1963	47.3
10	2025	47.2

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	2019, 1975	43.6
6	2009, 1979, 1968, 1949	43.8
11	1971	43.9
77	2025	47.2


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)	13.7	13.4	14.7	11	9.7	9	9.1	8.1	8.8	10.9	11.7	17.1	11.4
Maximum 3-sec Gust	58	70	68	54	56	56	65	54	67	59	47	78	78
Direction	210	240	220	280	130	230,240	320	280	190	230	210	290	290
Date of Occurrence	21,31	5	16	9	4	11,20	21	15	11	19	4,16	17	12/17
Number of Days with:
2-Min Wind >50 mph	0	1	1	0	0	0	0	0	0	0	0	2	4
Peak Wind >50 mph	4	7	4	2	2	3	4	1	1	2	0	8	38
Peak Wind >70 mph	0	1	0	0	0	0	0	0	0	0	0	2	3

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Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.48	0.24	1.33	1.59	1.28	0.53	1.14	0.72	2.55	1.56	0.27	0.36	12.05
Mean Precipitation (1991-2020 Normals)	0.49	0.56	0.84	1.41	2.21	1.34	1.19	0.79	0.95	1.19	0.64	0.61	12.22
Departure from Normal	-0.01	-0.32	0.49	0.18	-0.93	-0.81	-0.05	-0.07	1.6	0.37	-0.37	-0.25	-0.17
Percent of Normal	98	43	158	113	58	40	96	91	268	131	42	59	99
Rank - 86 years (P.O.R 12/1939-2025)	44	8	68	62	27	17	50	50	81	71	14	28	47

Greatest 24-HR Total	0.23	0.08	0.8	0.46	0.31	0.27	0.50	0.44	2.05	0.63	0.23	0.15	2.05
Dates of Occurrence	3	6-7	6-7	17-18	18-19	11-12	29	27	16-17	15-16	28-29	26-27	9/16-17
Number of Days with:
Precipitation >= 0.01	9	5	10	9	11	7	7	5	6	11	5	6	91
Precipitation >= 0.10	2	0	3	6	5	1	3	2	3	5	1	2	33
Precipitation >= 1.00	0	0	0	0	0	0	0	0	1	0	0	0	1
Days with Thunderstorms	0	0	2	0	6	9	9	5	7	2	0	0	40
Daily Precipitation Records Set or Tied	0	0	1	0	0	0	0	1	3	0	0	0	5

Precipitation Ranks and Records:

One Day Precipitation Records:

March: 0.77" on the 6th

August: 0.44" on the 27th

September: 1.24" on the 16th, 0.82" on the 17th, and 0.38" on the 23rd

Top Ten Driest February's on Record
Rank	Year	Precipitation (inches)
1	1941	0.06
2	2005	0.13
3	1957	0.15
4	1951	0.16
5	2002	0.17
6	1981	0.23
7	2025,1996	0.24
9	2007	0.26
10	1970	0.27

Top Ten Wettest September's on Record
Rank	Year	Precipitation (inches)
1	1982	3.40
2	1973	3.28
3	1989	3.22
4	1950	3.11
5	1995	2.56
6	2025	2.55
7	1961	2.46
8	1965	2.07
9	1959	1.99
10	2004	1.72

Top Ten Driest Years on Record
Rank	Year	Precipitation (inches)
1	2020	5.79
2	1988	6.56
3	2001	6.76
4	2002	7.05
5	1960	7.34
6	1954	7.70
7	2012	7.88
8	1963	7.90
9	1966	8.14
10	1943	8.91
47	2025	12.05

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
40	2025	12.05


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)	6.7	2.3	8	7.7	0.3	0	0	0	0	1.3	3	5.5	34.8
Mean Snowfall (1991-2020 Normals)	9	10.9	10.3	10.5	2.6	0.1	0	0	1.5	7	8.9	11	71.8
Departure from Normal	-2.3	-8.6	-2.3	-2.8	-2.3	-0.1	0.0	0.0	-1.5	-5.7	-5.9	-5.5	-37.0
Percent of Normal	74	21	78	73	12	0	0	0	0	19	34	50	48
Rank - Least to Most 85 years (P.O.R 12/1939-2024)	28	3	28	31	32	NA	NA	NA	NA	21	12	24	1

Greatest 24-HR Total	2	1	5.5	4	0.3	0	0	0	0	1	3	2.5	5.5
Dates of Occurrence	17	15	6-7	17-18	6	NA	NA	NA	NA	27	28-29	27-28	3/6-7
Number of Days with:
Snowfall >= 1.0 inch	4	1	3	3	0	0	0	0	0	1	1	4	17
Daily Snowfall Records Set or Tied	0	0	0	0	0	0	0	0	0	0	0	0	0
Note: 50 months of September on record with no snowfall.

1st Year with the least snow at 34.8 inches. Previously, it was 1943 with 38 inches.

3rd Least Snowy Season with 42.4 inches (2024-2025)

Snowfall Ranks and Records:

February had 3rd least snowfall on record

One Day Snowfall Records (inches):

There were no daily snowfall records set in 2025.

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	2023	116.1
6	1983	114.2
7	1978	112.7
8	2021	108.1
9	2013	107.5
10	1955	103.3
86	2025	34.8



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

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Multi-Day Heavy Rain Event in the Four Corners; Soggy Sunday Expected in Florida

Casper 2025 Annual Summary

Temperature Ranks and Records:

Precipitation Ranks and Records: