Stanley, ID: September

30 September 2026: September 2026 averaged 49°F in Stanley, ID, the warmest September since 2025, 28th warmest of 66.

September 2026

Mean temperature: 49°F; Warmest since 2025; 28th warmest of 66
Precipitation: 1.56 in; Wettest since 2019; 11th wettest of 67

A normal September in Stanley, ID (1991 to 2020): a mean temperature of 49.6°F, between 46.3°F and 51.5°F in eight years of ten and 0.71 in of precipitation, between 0.12 in and 2.09 in in eight years of ten.

The mean temperature of every September in Stanley, ID since 1916: 49°F in 2026; the highest is 53.7°F, in 1990.

Normal range, 46.3 to 51.5°F

Every year, ranked, as a table

Every September in Stanley, ID from 1916 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	49	28	66.1	49	31.9	11	1.56	11	0
2025	52.1	8	72.7	15	31.5	12	1.13	25	0
2024	53.3	3	73.8	13	32.8	6	0.40	50	0
2023	50.7	15	69	34	32.4	7	1.55	13	0
2022	53.5	2	74.9	6	32.1	9	0.82	35	0
2021	49.7	23	72.6	16	26.7	42	0.04	62	3
2020	52.2	7	75.5	4	28.9	28	0.79	36	0
2019	49.5	26	65.8	52	33.1	5	2.09	6	0
2018	48.9	29	71.2	20	26.7	42	0.17	58	0
2017	50.3	19	67.4	42	33.2	4	2.40	4	0
2016	49.5	26	66.9	46	32	10	1.41	16	0
2015	49.8	22	69.5	30	30.2	20	2.09	6	0
2014	51.1	11	71	23	31.2	15	1.20	24	0
2013	50.7	15	66.1	49	35.3	2	4.05	1	0
2012	50.4	18	73.6	14	27.2	38	0.36	51	0
2011	51.1	11	74.7	8	27.4	35	0.13	59	0
2010	48.3	35	69.3	31	27.3	36	0.25	55	0
2009	52.6	6	74.8	7	30.4	18	0.55	45	1
2008	47.4	43	68.9	35	25.8	51	1.22	23	0
2007	47.2	45	65.7	53	28.6	30	0.96	32	0
2006	46.8	48	67.3	45	26.4	46	0.71	39	0
2005	46.4	51	66.6	47	26.3	48	0.63	42	0
2004	45.6	55	62	63	29.5	25	1.29	19	3
2003	48.2	36	69.3	31	27	41	0.30	52	0
2002	47.8	40	67.7	39	27.9	33	0.60	43	0
2001	51.2	10	71.2	20	31.2	15	1.40	17	0
2000	47.2	45	65.2	55	29.1	27	0.91	33	0
1999	46.1	53	67.4	42	24.9	57	0.08	60	0
1998	53.1	5	69.7	28	36.4	1	1.01	28	0
1997	50.6	17	70	26	31.5	12	0.56	44	3
1996	45.3	57	65.2	55	25.2	56	0.20	57	2
1995	49.7	23	72.4	17	27.1	39	0.26	54	1
1994	50	21	74.7	8	25.3	55	trace	64	0
1993			69.3	31			trace	64	7
1991	50.8	14	71.2	20	30.3	19	0.98	30	0
1990	53.7	1	76.1	3	31.4	14	0.04	62	0
1989	48.5	32	70.7	24	26.4	46	0.54	46	0
1988	47.5	42	69.7	28	25.4	53	0.00	66	1
1987	49.7	23	75.1	5	24.3	59	0.00	66	0
1986	44.4	58	58.7	67	30.2	20	2.34	5	0
1985	44.1	61	60.5	65	27.6	34	1.53	14	1
1984	44.2	60	63.9	62	24.5	58			0
1983	47.1	47	67.7	39	27.1	39	0.76	37	2
1982	46.4	51	64.7	57	28.4	31	1.27	21	1
1981	48.5	32	71.6	18	25.4	53	0.66	40	0
1980	48.8	30	67.4	42	30.1	23	2.41	3	0
1979	50.3	19	74.3	12	26	50	0.22	56	2
1978	46.5	50	64.1	60	28.8	29	1.28	20	1
1977	46.8	48	65.5	54	28.2	32	1.88	8	0
1976	48.8	30	67.7	39	29.9	24	1.79	10	0
1973	48.1	37	66	51	30.2	20	1.56	11	1
1971	44.3	59	64.5	59	24.1	60	0.97	31	0
1970	45.5	56	64.1	60	26.6	44	0.72	38	1
1968	47.9	38	70.3	25	25.5	52	0.99	29	1
1967			76.6	2			1.03	27	9
1966	52.1	8	74.7	8	29.4	26	0.66	40	3
1965	41	65	58.6	68	23.9	61	1.13	25	3
1964	44	62	66.2	48	21.7	65	0.06	61	0
1963	53.3	3	71.3	19	35.2	3	1.31	18	0
1926	39.6	66	60.2	66	19.1	66	0.43	49	0
1925	47.9	38	64.6	58	31.1	17	1.50	15	0
1923	48.4	34	74.5	11	22.3	64	0.48	47	2
1922			76.8	1			0.46	48	5
1921	42.3	63	61.9	64	22.4	63	1.25	22	2
1920	42	64	57.1	69	26.6	44	1.82	9	1
1919	47.4	43	68.8	36	26.3	48			3
1918	51	13	69.9	27	32.4	7	2.58	2	2
1917	47.6	41	67.8	38	27.3	36	0.88	34	0
1916	45.8	54	68.6	37	23	62	0.27	53	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1990	53.7
2022	53.5
2024	53.3
1963	53.3
1998	53.1
2009	52.6
2020	52.2
2025	52.1
1966	52.1
2001	51.2

Coldest
Year	Mean, °F
1926	39.6
1965	41
1920	42
1921	42.3
1964	44
1985	44.1
1984	44.2
1971	44.3
1986	44.4
1996	45.3

Wettest
Year	Precipitation, in
2013	4.05
1918	2.58
1980	2.41
2017	2.40
1986	2.34
2019	2.09
2015	2.09
1977	1.88
1920	1.82
1976	1.79

Driest
Year	Precipitation, in
1988	0.00
1987	0.00
1994	trace
1993	trace
2021	0.04
1990	0.04
1964	0.06
1999	0.08
2011	0.13
2018	0.17

The hottest, coldest and wettest days

Hottest day: 77°F; 16 September 2026, 1 September 2026
Coldest night: 21°F; 15 September 2026
Wettest day: 0.31 in; 18 September 2026

Every month, season and year

Months

Seasons

Years

Stanley, ID the day's answers

All-time records

Every answer in words

September 2026 brought 1.56 in of precipitation in Stanley, ID, the wettest September since 2019, tied 11th wettest of 67 (with 1973).
The hottest day of September 2026 in Stanley, ID: 77°F on Wednesday 16 September 2026 and Tuesday 1 September 2026.
The coldest night of September 2026 in Stanley, ID: a low of 21°F on Tuesday 15 September 2026.
The wettest day of September 2026 in Stanley, ID: 0.31 in on Friday 18 September 2026.