Casper, WY: 2026

9 October 2026: 2026 so far averaged 53.9°F in Casper, WY, the warmest 1 January to 9 October on record, in 87 years since 1940; provisional.

2026 so far, to 9 October 2026

Mean temperature: 53.9°F; Warmest on record; Warmest of 87, provisional
Precipitation: 7.10 in; Driest since 2020; 13th driest of 87

A normal 1 January to 9 October in Casper, WY (1991 to 2020): a mean temperature of 49.6°F, between 48.2°F and 51.2°F in eight years of ten and 10.29 in of precipitation, between 6.57 in and 13.79 in in eight years of ten.

The mean temperature of every 1 January to 9 October in Casper, WY since 1940: 53.9°F in 2026, the highest of them all.

Normal range, 48.2 to 51.2°F

Every year, ranked, as a table

Every 1 January to 9 October in Casper, WY from 1940 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	53.9	1	70.1	1	37.6	5	7.10	75	0
2025	49.4	39	65.1	15	33.7	72	10.52	36	0
2024	50.6	14	66.5	6	34.6	54	7.22	74	0
2023	47.3	76	60.6	79	34	65	13.07	13	0
2022	48.7	49	64.3	25	33.2	79	11.27	25	0
2021	49.1	46	64.2	27	34	65	10.82	34	0
2020	49.5	36	64.9	19	34.1	62	4.75	87	0
2019	47.8	73	62.3	60	33.2	79	11.08	28	0
2018	49.6	34	65.1	15	34	65	11.46	23	1
2017	49.8	33	64.1	31	35.6	31	12.24	19	0
2016	50.2	25	64.7	21	35.7	28	13.77	8	0
2015	51.1	7	65.9	9	36.2	20	10.66	35	0
2014	48.3	62	63.1	49	33.4	75	9.60	52	0
2013	49.6	34	64.2	27	35	44	12.83	15	0
2012	52.4	3	68	3	36.8	13	6.59	79	0
2011	49.1	46	63.2	46	34.7	50	11.01	30	2
2010	49	48	63.4	42	34.6	54	9.97	42	0
2009	48	69	62.6	56	33.3	76	14.24	5	0
2008	47.4	75	62.4	58	32.5	86	9.93	43	0
2007	50.6	14	65.6	12	35.6	31	13.29	11	0
2006	51.1	7	66	8	36.1	22	8.75	61	0
2005	50.3	22	65.7	11	34.9	48	10.31	38	0
2004	49.2	45	63.7	38	34.7	50	8.45	65	0
2003	50.2	25	65.1	15	35.2	42	11.78	22	0
2002	48.2	65	63.4	42	33	81	6.43	80	0
2001	50.6	14	65.2	14	36	23	5.78	83	0
2000	51	9	66.5	6	35.5	37	9.77	47	0
1999	49.5	36	64	32	35	44	8.26	67	0
1998	50	30	63.7	38	36.2	20	10.27	40	0
1997	48.2	65	62.3	60	34.1	62	10.86	32	0
1996	48.2	65	63.7	38	32.7	84	7.68	70	0
1995	49.3	42	62.6	56	35.9	25	17.41	1	0
1994	53.3	2	68.2	2	38.4	1	9.65	51	0
1993	48.4	57	61.5	71	35.3	39	13.95	7	0
1992	52.3	4	66.8	5	37.9	2	7.57	72	0
1991	50.7	12	64.7	21	36.8	13	10.46	37	0
1990	50.4	21	65.1	15	35.7	28	9.88	45	0
1989	48.5	54	63.2	46	33.9	68	11.96	21	0
1988	50.5	17	65.4	13	35.6	31	5.47	86	0
1987	50.3	22	64.3	25	36.4	19	11.04	29	0
1986	51	9	64.8	20	37.3	8	13.25	12	0
1985	47	80	61.3	72	32.6	85	8.97	58	0
1984	48.3	62	61.9	64	34.7	50	11.22	26	0
1983	50.5	17	63.8	35	37.1	11	14.39	4	0
1982	48.6	51	62.7	54	34.4	59	15.64	2	0
1981	51.9	5	66.9	4	37	12	8.95	59	0
1980	48.4	57	63.2	46	33.6	74	7.50	73	0
1979	47.3	76	61.7	67	33	81	11.00	31	0
1978	48.1	68	61.8	65	34.5	57	15.10	3	0
1977	50.2	25	64.5	24	35.9	25	8.09	69	0
1976	49.4	39	62.8	53	36	23	10.85	33	0
1975	46.7	84	60	80	33.3	76	9.69	49	0
1974	48.3	62	62	63	34.6	54	9.58	53	0
1973	47.1	79	60	80	34.2	60	13.61	9	0
1972	48.5	54	62.9	50	34.1	62	9.68	50	0
1971	47.9	72	62.1	62	33.7	72	12.43	18	0
1970	48.4	57	62.7	54	34.2	60	9.85	46	0
1969	50	30	64.7	21	35.4	38	8.65	63	0
1968	47.5	74	61.2	73	33.9	68	10.31	38	0
1967	49.3	42	62.9	50	35.8	27	12.80	16	0
1966	49.4	39	64.2	27	34.5	57	6.15	81	0
1965	46.3	87	59.4	85	33.3	76	11.18	27	0
1964	46.8	83	59.9	83	33.8	71	9.52	55	0
1963	50.5	17	64.2	27	36.8	13	6.95	76	0
1962	48	69	61.1	76	34.8	49	13.44	10	0
1961	50.3	22	62.9	50	37.7	4	8.27	66	0
1960	48.7	49	62.4	58	35	44	5.77	84	0
1959	48.4	57	61.8	65	35	44	9.70	48	0
1958	50.1	29	63.6	41	36.5	17	9.13	57	0
1957	48.4	57	61.2	73	35.6	31	13.04	14	0
1956	50.2	25	63.8	35	36.5	17	6.76	78	0
1955	48.6	51	61.6	70	35.7	28	8.58	64	0
1954	51.7	6	65.8	10	37.6	5	6.09	82	0
1953	50.7	12	64	32	37.3	8	8.13	68	0
1952	50	30	63.4	42	36.7	16	8.94	60	0
1951	46.9	82	59.8	84	33.9	68	9.90	44	0
1950	46.5	86	60	80	33	81	12.09	20	0
1949	46.6	85	61.2	73	32	87	9.42	56	0
1948	48.6	51	61.7	67	35.6	31	8.67	62	1
1947	48.5	54	61.7	67	35.3	39	12.64	17	0
1946	50.5	17	63.8	35	37.2	10	11.36	24	0
1945	47.3	76	59.3	87	35.3	39	9.57	54	0
1944	47	80	59.4	85	34.7	50	10.21	41	0
1943	49.5	36	63.3	45	35.6	31	6.85	77	0
1942	48	69	60.8	78	35.2	42	5.75	85	0
1941	49.3	42	61.1	76	37.5	7	14.24	5	0
1940	50.9	11	64	32	37.8	3	7.62	71	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2026	53.9
1994	53.3
2012	52.4
1992	52.3
1981	51.9
1954	51.7
2015	51.1
2006	51.1
2000	51
1986	51

Coldest
Year	Mean, °F
1965	46.3
1950	46.5
1949	46.6
1975	46.7
1964	46.8
1951	46.9
1985	47
1944	47
1973	47.1
2023	47.3
More years share the last value

Wettest
Year	Precipitation, in
1995	17.41
1982	15.64
1978	15.10
1983	14.39
2009	14.24
1941	14.24
1993	13.95
2016	13.77
1973	13.61
1962	13.44

Driest
Year	Precipitation, in
2020	4.75
1988	5.47
1942	5.75
1960	5.77
2001	5.78
1954	6.09
1966	6.15
2002	6.43
2012	6.59
1956	6.76

The hottest, coldest and wettest days

Hottest day: 103°F; 2 August 2026, 12 July 2026
Coldest night: -20°F; 20 February 2026
Wettest day: 1.26 in; 13 August 2026

Month by month

Month	Mean temperature	Precipitation
January	30.4°F 7th warmest of 87	0.19 in 12th driest of 87
February	35.4°F 4th warmest of 87	0.35 in 17th driest of 87
March	45.9°F Warmest of 87	0.16 in 2nd driest of 87
April	44.1°F 29th warmest of 87	1.28 in 41st wettest of 87
May	53°F 40th warmest of 87	1.67 in 39th driest of 87
June	62.9°F 42nd warmest of 87	0.55 in 21st driest of 87
July	75.8°F 2nd warmest of 87	0.13 in 4th driest of 87
August	71.5°F 16th warmest of 87	2.01 in 5th wettest of 87
September	62.7°F 11th warmest of 87	0.76 in 41st wettest of 87
October so far	59.6°F 3rd warmest of 87	0.00 in Driest of 87

Hot days and freezes

Casper, WY has had 50 days at 90°F or above in 2026 through 9 October, the most by that date since 2020, 7th most of 87.
Casper, WY has had 6 days at 100°F or above in 2026 through 9 October, the most by that date since 2006, 2nd most of 87.
Casper, WY has had 97 freezing nights (a low of 32°F or below) in 2026 through 9 October, the most by that date since 2025, tied 86th most of 87 (with 1993).
The last freeze of spring 2026 in Casper, WY came on Monday 15 June 2026, the latest since 2025, 4th latest of 87.

Daily records set

Date	Record	Value	Before	Check
8 October	Warmest day	82°F	81°F 2020	Confirmed
6 October	Warmest day	86°F	84°F 1975	Confirmed
21 August	Warmest day	99°F	96°F 2024	Provisional
8 August	Warmest day	99°F	98°F 2001, 1983	Provisional
2 August	Warmest day	103°F	99°F 2000	Provisional
26 July	Warmest day	102°F	98°F 2010, 2008	Provisional
25 July	Warmest day	102°F	100°F 2024	Provisional
15 June	Coldest night	30°F	35°F 1945	Provisional
6 June	Warmest day	96°F	94°F 2006	Provisional
19 May	Coldest night	26°F	27°F 1968, 1966	Provisional
13 May	Warmest day	92°F	88°F 2013	Provisional
11 May	Warmest day	85°F	83°F 1940	Provisional
6 May	Coldest night	18°F	20°F 2010	Provisional
30 March	Warmest day	76°F	73°F 1986, 1966	Provisional
29 March	Warmest day	76°F	74°F 1986	Provisional
25 March	Warmest day	82°F	74°F 2012	Provisional
24 March	Warmest day	77°F	72°F 1993	Provisional
21 March	Warmest day	83°F	72°F 2009	Provisional
20 March	Warmest day	81°F	73°F 2007	Provisional
19 March	Warmest day	81°F	71°F 1997	Provisional
18 March	Warmest day	78°F	75°F 2017	Provisional
7 February	Warmest day	61°F	60°F 2015	Provisional
5 February	Warmest day	64°F	62°F 1963	Provisional
15 January	Warmest day	56°F	52°F 1995	Provisional
14 January	Warmest day	57°F	55°F 1995	Provisional
13 January	Warmest day	55°F	52°F 1990, 1953	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Casper, WY the day's answers

All-time records

Every answer in words

2026 so far brought 7.10 in of precipitation in Casper, WY, the driest 1 January to 9 October since 2020, 13th driest of 87.
The hottest day of 2026 so far in Casper, WY: 103°F on Sunday 2 August 2026 and Sunday 12 July 2026.
The coldest night of 2026 so far in Casper, WY: a low of -20°F on Friday 20 February 2026.
The wettest day of 2026 so far in Casper, WY: 1.26 in on Thursday 13 August 2026.