Boise, ID: Winter

28 February 2026: Winter 2026 (December 2025 to February 2026) averaged 39.1°F in Boise, ID, the warmest winter since 1934, 2nd warmest of 148.

Winter 2026 (December 2025 to February 2026)

Mean temperature: 39.1°F; Warmest since 1934; 2nd warmest of 148
Precipitation: 4.16 in; Wettest since 2025; 71st wettest of 148

A normal winter in Boise, ID (1991 to 2020): a mean temperature of 33.9°F, between 29.9°F and 36.6°F in eight years of ten and 3.86 in of precipitation, between 2.35 in and 5.62 in in eight years of ten.

The mean temperature of every winter in Boise, ID since 1878: 39.1°F in 2026; the highest is 42°F, in 1934.

Normal range, 29.9 to 36.6°F

Every year, ranked, as a table

Every winter in Boise, ID from 1876 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	39.1	2	47.4	2	30.9	3	4.16	71	0
2025	34.1	52	41.4	57	26.7	50	6.92	5	0
2024	37	12	44.5	11	29.6	12	5.98	18	0
2023	32.5	76	40.1	81	25	77	3.13	113	0
2022	32	89	39.8	86	24.1	89	2.70	129	0
2021	34.8	39	42.5	35	27.1	41	3.41	101	0
2020	36.9	13	44.2	15	29.6	12	4.50	56	0
2019	34	53	41.3	60	26.8	46	6.19	15	0
2018	33.8	57	41.5	55	26.2	57	2.94	120	0
2017	27.2	133	34.2	139	20.1	130	6.17	16	0
2016	35.3	29	42.5	35	28.2	26	3.21	110	0
2015	37.5	6	44.6	8	30.3	7	5.52	29	0
2014	30.9	101	37.8	112	24	91	3.69	89	0
2013	30.1	112	37.6	114	22.7	107	2.93	121	0
2012	34.8	39	43.9	18	25.6	70	3.75	85	0
2011	34	53	41.3	60	26.8	46	5.10	41	0
2010	34.6	43	41	66	28.2	26	3.97	79	0
2009	33.1	66	40.3	77	25.9	61	2.82	123	0
2008	32.4	79	39.1	98	25.7	68	2.76	128	0
2007	33.1	66	41.5	55	24.6	84	3.09	115	0
2006	33.5	60	40.8	69	26.3	55	5.56	28	0
2005	34.9	37	42.3	40	27.5	34	1.81	143	0
2004	33.5	60	39.8	86	27.2	39	4.94	46	0
2003	37.6	5	44.4	12	30.8	5	4.46	59	0
2002	32	89	39.2	97	24.8	78	2.28	135	0
2001	30.6	105	37.1	125	24	91	2.36	133	0
2000	35.8	19	42.7	32	28.8	19	4.47	58	0
1999	34.2	50	41.4	57	27.1	41	5.01	43	0
1998	36.6	14	44.3	13	29	18	4.77	53	0
1997	35	35	42.7	32	27.3	38	6.35	11	0
1996	33.5	60	40.3	77	26.7	50	4.63	55	0
1995	35.8	19	43.9	18	27.8	31	4.40	62	0
1994	33.5	60	41.2	62	25.9	61	3.16	111	0
1993	27.3	132	34.2	139	20.4	127	3.50	99	0
1992	35.5	24	44.7	7	26.2	57	1.63	146	0
1991	27.6	130	37.5	117	17.7	141	2.40	131	0
1990	32.8	70	42.1	43	23.5	96	1.73	145	0
1989	25	145	33	147	17	144	3.10	114	0
1988	32.1	84	41.1	63	23.1	100	2.78	126	0
1987	30.9	101	39.6	89	22.1	112	2.09	139	0
1986	27.2	133	35.6	131	18.8	138	5.92	21	0
1985	22.5	147	30.5	149	14.5	146	1.38	147	0
1984	24.7	146	31.3	148	18.1	139	5.89	22	0
1983	36.1	17	43.7	21	28.5	23	4.85	51	0
1982	30	113	38.2	109	21.9	114	5.68	24	0
1981	34.5	46	42.2	41	26.8	46	3.71	88	0
1980	35.2	31	42.7	32	27.6	32	3.59	96	0
1979	25.5	144	33.9	144	17.1	143	3.73	87	0
1978	37.4	7	44	17	30.9	3	6.33	12	0
1977	27.1	136	37.3	121	17	144	1.31	148	0
1976	32.5	76	39.3	95	25.8	64	4.09	74	0
1975	32.6	73	39.9	84	25.3	75	4.92	47	0
1974	35.4	26	42.2	41	28.5	23	4.24	67	0
1973	31	99	39.1	98	23	102	3.35	103	0
1972	32.5	76	39.5	91	25.4	73	4.69	54	0
1971	34.9	37	41.6	53	28.1	29	4.06	75	0
1970	37.2	9	44.3	13	30	10	5.94	20	0
1969	35.2	31	41.8	52	28.6	22	6.45	8	0
1968	32.6	73	40.7	71	24.4	88	2.79	124	0
1967	35.1	33	42.8	31	27.5	34	3.25	107	0
1966	31.9	91	39.9	84	23.8	93	2.15	138	0
1965	35.3	29	42.5	35	28.2	26	6.39	10	0
1964	26.8	139	34.1	143	19.5	133	3.67	91	0
1963	33.7	58	42	46	25.4	73	3.08	116	0
1962	27.9	129	34.2	139	21.6	117	2.67	130	0
1961	34.6	43	43.4	26	25.9	61	2.05	140	0
1960	28.4	126	37.6	114	19.2	135	3.60	93	0
1959	36.5	16	43.9	18	29.1	17	3.24	109	0
1958	35.8	19	42.9	30	28.7	21	5.36	34	0
1957	28.7	125	36.3	128	21	123	3.60	93	0
1956	32.1	84	39.5	91	24.8	78	5.30	37	0
1955	27.1	136	34.9	137	19.2	135	2.84	122	0
1954	35.4	26	43.5	25	27.4	37	2.79	124	0
1953	37.2	9	44.6	8	29.7	11	5.84	23	0
1952	28.1	128	35.3	136	20.9	124	4.83	52	0
1951	33.9	56	40.8	69	27	43	6.01	17	0
1950	30.4	108	38.6	106	22.1	112	4.30	65	0
1949	21.9	148	30.5	149	13.3	148	4.28	66	0
1948	32.1	84	40.5	74	23.8	93	3.05	117	0
1947	32.3	81	41	66	23.6	95	1.80	144	0
1946	31.1	98	38.9	102	23.3	97	4.92	47	0
1945	32.8	70	39.1	98	26.4	54	4.35	63	0
1944	30.6	105	38.7	104	22.4	110	2.02	141	0
1943	32.4	79	39.6	89	25.2	76	4.90	50	0
1942	29	123	36.6	127	21.4	120	4.16	71	0
1941	35.9	18	43.7	21	28.1	29	3.28	106	0
1940	37.3	8	44.6	8	30.1	8	5.01	43	0
1939	33	69	40.2	79	25.8	64	3.14	112	0
1938	37.9	3	44.8	6	31.1	2	4.43	61	0
1937	27.5	131	35.4	133	19.5	133	3.82	82	0
1936	29.7	117	36.3	128	23.1	100	5.39	33	0
1935	32.3	81	38.5	107	26.2	57	3.25	107	0
1934	42	1	49.7	1	34.4	1	3.98	78	0
1933	26.8	139	34.4	138	19.1	137	3.59	96	0
1932	28.9	124	36	130	21.9	114	3.96	80	0
1931	29.9	115	37.4	119	22.3	111	2.26	136	0
1930	31.7	94	39.3	95	24.1	89	5.98	18	0
1929	25.6	142	33.7	145	17.5	142	4.23	68	0
1928	30.4	108	37.4	119	23.3	97	3.39	102	0
1927	33.7	58	40.7	71	26.7	50	5.66	26	0
1926	35.5	24	41.9	49	29.2	15	4.15	73	0
1925	31.8	93	39.1	98	24.5	86	6.29	13	0
1924	32.2	83	40	82	24.5	86	2.32	134	0
1923	32.1	84	39.7	88	24.6	84	3.56	98	0
1922	28.4	126	35.4	133	21.4	120	2.78	126	0
1921	34.8	39	42.1	43	27.5	34	5.23	39	0
1920	29.6	118	37.3	121	21.9	114	2.21	137	0
1919	32.6	73	40.4	75	24.8	78	3.03	119	0
1918	37.9	3	45	5	30.8	5	5.48	31	0
1917	27.2	133	34.2	139	20.3	128	3.60	93	0
1916	33.1	66	40.4	75	25.7	68	6.70	6	0
1915	30.5	107	37.7	113	23.2	99	3.48	100	0
1914	34.2	50	41.4	57	27	43	4.44	60	0
1913	30.2	110	37.5	117	23	102	2.37	132	0
1912	32.1	84	38.7	104	25.6	70	5.15	40	0
1911	32.8	70	39.5	91	26.1	60	4.17	70	0
1910	26.9	138	33.7	145	20.1	130	5.10	41	0
1909	35.6	23	42	46	29.2	15	7.40	3	0
1908	36.6	14	43.7	21	29.5	14	3.77	84	0
1907	37.1	11	44.2	15	30.1	8	6.23	14	0
1906	31	99	37.2	123	24.7	81	4.35	63	0
1905	33.2	65	41	66	25.5	72	3.64	92	0
1904	34.6	43	41.9	49	27.2	39	3.04	118	0
1903	31.4	97	38.1	110	24.7	81	4.02	76	0
1902	34.4	48	42.4	38	26.3	55	5.41	32	0
1901	35.7	22	43	29	28.4	25	3.30	105	0
1900	34.3	49	41.9	49	26.7	50	3.84	81	0
1899	30	113	37.2	123	22.8	106	4.50	56	0
1898	30.9	101	40.2	79	21.5	119	5.31	36	0
1897	33.5	60	41.1	63	25.8	64	5.60	27	0
1896	34	53	43.3	27	24.7	81	4.91	49	0
1895	31.6	95	41.6	53	21.6	117	5.27	38	0
1894	31.9	91	41.1	63	22.7	107	4.18	69	0
1893	30.2	110	40.6	73	19.9	132	3.35	103	0
1892	26.7	141	35.4	133	18.1	139	3.68	90	0
1891	29.1	122	35.6	131	22.7	107	5.67	25	0
1890	29.2	121	37.6	114	20.8	125	6.42	9	0
1889	29.8	116	39.4	94	20.2	129	1.82	142	0
1888	29.6	118	38.5	107	20.7	126	3.78	83	0
1887	34.5	46	42.1	43	26.8	46	6.58	7	0
1886	34.8	39	43.7	21	25.8	64	4.97	45	0
1885	30.8	104	38.8	103	22.9	105	9.41	2	0
1884							5.34	35	31
1883	25.6	142	37.1	125	14.2	147	7.11	4	0
1882	29.6	118	38.1	110	21.1	122	4.00	77	4
1881	35.4	26	42	46	28.8	19	11.14	1	0
1880	35	35	42.4	38	27.6	32	5.49	30	0
1879	31.5	96	40	82	23	102	3.75	85	0
1878	35.1	33	43.2	28	27	43			0
1877			45.8	4					90
1876			46.4	3					91

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	42
2026	39.1
1938	37.9
1918	37.9
2003	37.6
2015	37.5
1978	37.4
1940	37.3
1970	37.2
1953	37.2

Coldest
Year	Mean, °F
1949	21.9
1985	22.5
1984	24.7
1989	25
1979	25.5
1929	25.6
1883	25.6
1892	26.7
1964	26.8
1933	26.8

Wettest
Year	Precipitation, in
1881	11.14
1885	9.41
1909	7.40
1883	7.11
2025	6.92
1916	6.70
1887	6.58
1969	6.45
1890	6.42
1965	6.39

Driest
Year	Precipitation, in
1977	1.31
1985	1.38
1992	1.63
1990	1.73
1947	1.80
2005	1.81
1889	1.82
1944	2.02
1961	2.05
1987	2.09

The hottest, coldest and wettest days

Hottest day: 63°F; 11 December 2025
Coldest night: 15°F; 25 January 2026, 24 January 2026
Wettest day: 0.93 in; 21 December 2025

Every month, season and year

Months

Seasons

Years

Boise, ID the day's answers

All-time records

Every answer in words

Winter 2026 (December 2025 to February 2026) brought 4.16 in of precipitation in Boise, ID, the wettest winter since 2025, tied 71st wettest of 148 (with 1942).
The hottest day of winter 2026 (December 2025 to February 2026) in Boise, ID: 63°F on Thursday 11 December 2025.
The coldest night of winter 2026 (December 2025 to February 2026) in Boise, ID: a low of 15°F on Sunday 25 January 2026 and Saturday 24 January 2026.
The wettest day of winter 2026 (December 2025 to February 2026) in Boise, ID: 0.93 in on Sunday 21 December 2025.