Sheridan, WY: September

30 September 2026: September 2026 averaged 62.2°F in Sheridan, WY, the warmest September since 2024, tied 17th warmest of 120 (with 2009).

September 2026

Mean temperature: 62.2°F; Warmest since 2024; 17th warmest of 120
Precipitation: 0.77 in; Driest since 2025; 39th driest of 120

A normal September in Sheridan, WY (1991 to 2020): a mean temperature of 59.1°F, between 56.6°F and 62.3°F in eight years of ten and 1.44 in of precipitation, between 0.27 in and 2.70 in in eight years of ten.

The mean temperature of every September in Sheridan, WY since 1907: 62.2°F in 2026; the highest is 66.2°F, in 2024.

Normal range, 56.6 to 62.3°F

Every year, ranked, as a table

Every September in Sheridan, WY from 1907 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
2026	62.2	17	78.9	20	45.4	14	0.77	81
2025	62	19	80	11	43.9	29	0.12	113
2024	66.2	1	85.6	1	46.7	9	0.39	99
2023	62.4	13	77.9	23	46.9	8	2.78	13
2022	64.4	4	81.3	5	47.4	4	2.24	21
2021	62.9	8	82.4	3	43.5	37	0.19	109
2020	61	23	79.5	17	42.4	57	1.37	55
2019	60.1	32	74.7	57	45.4	14	1.88	33
2018	57.4	73	73.2	72	41.6	76	1.21	59
2017	57.3	75	72.4	81	42.1	63	1.89	31
2016	59.7	37	73	75	46.3	10	3.71	5
2015	64	6	83.1	2	45	18	0.27	104
2014	58.1	62	74.2	60	42	67	1.63	42
2013	62.3	15	77.5	25	47.1	5	4.26	2
2012	61.3	21	80.5	10	42.1	63	trace	119
2011	60.8	25	79.2	19	42.3	60	0.12	113
2010	58.6	54	76.8	31	40.5	89	0.25	107
2009	62.2	17	81.1	7	43.4	40	0.58	92
2008	54.9	102	71.4	89	38.3	111	1.56	47
2007	59.3	43	76.2	34	42.4	57	0.96	70
2006	57	79	72.4	81	41.6	76	2.82	11
2005	60.2	30	77.5	25	42.9	50	0.71	85
2004	57.7	69	72.8	78	42.7	53	2.20	22
2003	56.8	81	72.9	76	40.6	87	1.28	58
2002	58.1	62	73.1	73	43	46	1.60	44
2001	61	23	77.6	24	44.4	23	1.76	37
2000	57.6	70	75	54	40.2	93	1.59	45
1999	54.6	105	70.4	99	38.8	105	2.69	14
1998	63.9	7	79.6	15	48.3	3	2.67	16
1997	59.8	36	75.9	38	43.7	32	0.95	71
1996	58.3	58	73.4	68	43.2	44	0.78	80
1995	58.3	58	73.1	73	43.5	37	2.08	25
1994	62.4	13	79.4	18	45.4	14	0.83	78
1993	55.1	98	70.1	103	40	95	0.58	92
1992	58.8	49	76.2	34	41.4	79	0.45	98
1991	59.7	37	74.6	58	44.8	21	1.50	50
1990	64.2	5	81.5	4	47	7	0.24	108
1989	58.8	49	76	37	41.7	73	0.84	77
1988	58	65	73.4	68	42.6	54	0.97	69
1987	58.9	48	75	54	42.8	51	1.49	51
1986	53.5	110	63.9	117	43	46	2.43	18
1985	52.6	115	65.5	113	39.7	99	2.36	19
1984	53.5	110	69	106	38	112	2.28	20
1983	59.6	39	75.2	50	43.9	29	0.94	72
1982	58	65	73.3	71	42.8	51	2.90	10
1981	62.7	11	80.6	9	44.8	21	0.63	90
1980	58.7	52	75.8	41	41.7	73	1.31	57
1979	62.3	15	81.2	6	43.5	37	0.39	99
1978	59.1	45	75.7	43	42.6	54	1.67	41
1977	57.5	71	74.2	60	40.8	84	0.93	74
1976	59.5	41	77	30	42.1	63	1.62	43
1975	56.8	81	74.2	60	39.4	102	0.19	109
1974	54.6	105	70.8	93	38.4	107	1.48	52
1973	54.9	102	67.6	109	42.3	60	2.79	12
1972	55.1	98	71.7	86	38.4	107	0.94	72
1971	54.5	107	70.6	96	38.4	107	0.90	75
1970	53.9	108	69.2	105	38.5	106	1.87	34
1969	60.5	28	77.3	28	43.7	32	0.09	115
1968	55.8	92	71.3	90	40.4	91	2.12	24
1967	59.2	44	74.8	56	43.6	36	1.56	47
1966	61.6	20	77.1	29	46.1	12	0.98	68
1965	47.4	120	59.3	120	35.4	120	1.75	38
1964	55.2	96	70.5	98	39.8	97	0.06	117
1963	65.3	2	79.9	13	50.6	1	1.33	56
1962	56.6	85	71.2	92	41.9	69	1.43	54
1961	50.7	117	63.8	118	37.6	115	2.56	17
1960	60.1	32	75.3	49	44.9	20	0.27	104
1959	57	79	70.6	96	43.3	43	0.60	91
1958	59.4	42	75.6	46	43.2	44	0.17	111
1957	56.8	81	72	85	41.6	76	1.11	62
1956	60	34	76.7	32	43.4	40	0.72	84
1955	58.6	54	73.5	67	43.7	32	0.71	85
1954	60	34	75.9	38	44.1	25	1.03	66
1953	61.3	21	78.7	21	43.8	31	0.77	81
1952	62.8	9	80	11	45.6	13	0.26	106
1951	53.5	110	67.3	110	39.7	99	3.08	6
1950	56.6	85	70.2	101	43	46	1.58	46
1949	57.4	73	73.7	65	41.1	81	1.48	52
1948	62.8	9	78.5	22	47.1	5	1.04	65
1947	60.2	30	74	64	46.3	10	1.89	31
1946	58.3	58	72.5	80	44.1	25	2.14	23
1945	56.5	88	70	104	43	46	3.02	7
1944	58.6	54	73.7	65	43.4	40	0.66	88
1943	59.1	45	75.5	48	42.6	54	0.34	101
1942	58.7	52	72.4	81	45	18	1.71	39
1941	53.9	108	66.5	112	41.4	79	2.04	28
1940	64.6	3	79.6	15	49.7	2	2.05	27
1939	58.1	62	75.7	43	40.5	89	0.75	83
1938	62.6	12	80.9	8	44.3	24	0.04	118
1937	60.7	27	77.4	27	44	28	0.50	97
1936	59.1	45	76.1	36	42.1	63	0.88	76
1935	58.8	49	75.6	46	41.9	69	0.64	89
1934	51.8	116	66.9	111	36.7	118	1.90	30
1933	58.4	57	75.8	41	40.9	83	0.51	95
1932	57.1	78	74.4	59	39.8	97	1.15	60
1931	60.3	29	76.5	33	44.1	25	2.08	25
1930	57.3	75	75.1	51	39.4	102	trace	119
1929	53.1	113	65.5	113	40.6	87	1.15	60
1928	55.5	93	72.9	76	38	112	0.29	103
1927	55.5	93	70.7	95	40.2	93	1.81	35
1926	50.4	118	64.4	116	36.4	119	2.95	8
1925	56.6	85	70.8	93	42.4	57	1.09	64
1924	54.8	104	71.6	88	38	112	1.03	66
1923	56.7	84	71.3	90	42	67	8.18	1
1922	60.8	25	79.9	13	41.7	73	0.08	116
1921	55	100	70.2	101	39.7	99	0.51	95
1920	57.5	71	75.1	51	39.9	96	0.16	112
1919	59.6	39	74.1	63	45.2	17	1.11	62
1918	55	100	68.1	108	41.8	72	2.68	15
1917	57.9	68	75.1	51	40.7	86	0.30	102
1916	55.2	96	73.4	68	37	116	0.56	94
1915	52.8	114	64.8	115	40.8	84	3.75	4
1914	57.2	77	75.9	38	38.4	107	0.80	79
1913	55.9	91	72.3	84	39.4	102	2.04	28
1912	48.7	119	60.6	119	36.8	117	3.79	3
1911	56.3	89	71.7	86	41	82	1.54	49
1910	55.4	95	68.9	107	41.9	69	1.79	36
1909	58.3	58	72.8	78	43.7	32	1.68	40
1908	58	65	75.7	43	40.3	92	0.67	87
1907	56.3	89	70.4	99	42.2	62	2.91	9

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2024	66.2
1963	65.3
1940	64.6
2022	64.4
1990	64.2
2015	64
1998	63.9
2021	62.9
1952	62.8
1948	62.8

Coldest
Year	Mean, °F
1965	47.4
1912	48.7
1926	50.4
1961	50.7
1934	51.8
1985	52.6
1915	52.8
1929	53.1
1986	53.5
1984	53.5
More years share the last value

Wettest
Year	Precipitation, in
1923	8.18
2013	4.26
1912	3.79
1915	3.75
2016	3.71
1951	3.08
1945	3.02
1926	2.95
1907	2.91
1982	2.90

Driest
Year	Precipitation, in
2012	trace
1930	trace
1938	0.04
1964	0.06
1922	0.08
1969	0.09
2025	0.12
2011	0.12
1920	0.16
1958	0.17

The hottest, coldest and wettest days

Hottest day: 97°F; 4 September 2026
Coldest night: 36°F; 15 September 2026
Wettest day: 0.58 in; 20 September 2026

Every month, season and year

Months

Seasons

Years

Sheridan, WY the day's answers

All-time records

Every answer in words

September 2026 brought 0.77 in of precipitation in Sheridan, WY, the driest September since 2025, tied 39th driest of 120 (with 1953).
The hottest day of September 2026 in Sheridan, WY: 97°F on Friday 4 September 2026.
The coldest night of September 2026 in Sheridan, WY: a low of 36°F on Tuesday 15 September 2026.
The wettest day of September 2026 in Sheridan, WY: 0.58 in on Sunday 20 September 2026.