Lewiston, ID: Summer

31 August 2026: Summer 2026 averaged 73.5°F in Lewiston, ID, the warmest summer since 2025, tied 34th warmest of 134 (with 1958).

Summer 2026

Mean temperature: 73.5°F; Warmest since 2025; 34th warmest of 134
Precipitation: 0.63 in; Driest since 2025; 6th driest of 135

A normal summer in Lewiston, ID (1991 to 2020): a mean temperature of 72.5°F, between 69.8°F and 74.4°F in eight years of ten and 2.40 in of precipitation, between 0.92 in and 3.37 in in eight years of ten.

The mean temperature of every summer in Lewiston, ID since 1882: 73.5°F in 2026; the highest is 78°F, in 2021.

Normal range, 69.8 to 74.4°F

Every year, ranked, as a table

Every summer in Lewiston, ID from 1882 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	73.5	34	87.8	47	59.1	21	0.63	130	0
2025	76	4	90	17	61.9	3	0.44	132	0
2024	75.5	6	90.2	11	60.8	6	1.17	116	0
2023	75.9	5	90.1	12	61.7	4	1.92	86	0
2022	75	11	89.1	28	61	5	3.51	18	0
2021	78	1	92.5	3	63.4	1	0.66	128	0
2020	72.4	60	85.8	87	58.9	27	2.48	66	0
2019	73.2	37	87.2	61	59.1	21	1.49	104	0
2018	73.2	37	87.7	51	58.8	30	1.61	100	0
2017	74.9	12	90.1	12	59.6	13	0.65	129	0
2016	72.5	55	87.1	62	57.8	52	2.82	46	0
2015	76.8	2	91.3	6	62.3	2	1.25	112	0
2014	74.6	15	88.9	30	60.3	8	2.38	74	0
2013	74.4	17	89.4	24	59.5	15	2.52	64	0
2012	73.6	30	88	45	59.1	21	2.69	52	0
2011	69.8	115	83.7	115	55.9	99	0.84	124	0
2010	70.2	107	83.7	115	56.6	89	3.13	37	0
2009	72.8	49	86.7	69	58.9	27	3.06	39	0
2008	71.6	76	86	83	57.2	78	1.74	96	0
2007	73.8	24	88.4	41	59.2	20	1.17	116	0
2006	74	22	88.7	34	59.3	18	1.84	93	0
2005	72.2	65	86.5	72	57.8	52	1.61	100	0
2004	73.8	24	87.8	47	59.7	10	3.24	29	0
2003	74.3	19	89.6	21	59	25	0.93	120	0
2002	71.5	78	85.8	87	57.3	72	2.98	41	0
2001	71.2	90	85.2	94	57.2	78	1.85	92	0
2000	71.1	92	85.6	91	56.6	89	1.42	107	0
1999	70.4	105	83.9	113	56.9	84	2.76	49	0
1998	73.6	30	87.7	51	59.5	15	3.36	25	0
1997	70.8	95	83.7	115	57.9	50	2.43	69	0
1996	70.8	95	85.5	92	56.1	97	0.85	122	0
1995	69	123	81.7	131	56.3	94	4.05	13	6
1994	73	44	87.6	55	58.5	37	1.67	99	0
1993	66.5	133	78.6	134	54.4	122	3.44	21	0
1992	72.3	64	86.3	76	58.3	41	3.46	20	0
1991	69.3	120	83	124	55.6	107	2.42	70	0
1990	73.6	30	86.5	72	60.6	7	1.77	95	0
1989	71.5	78	84.3	109	58.7	32	4.64	8	0
1988	71.5	78	85.8	87	57.2	78	2.65	57	0
1987	71.1	92	84.9	98	57.3	72	4.38	9	0
1986	72.5	55	86.8	67	58.2	43	1.81	94	0
1985	72.2	65	86.9	64	57.4	67	2.40	72	0
1984	71.4	84	86.1	79	56.7	88	2.78	48	0
1983	70.8	95	84.8	99	56.9	84	3.59	16	0
1982	72.1	69	86	83	58.1	47	2.67	55	0
1981	70.3	106	85	96	55.7	103	2.87	45	0
1980	68.5	131	82.1	130	55	115	2.67	55	0
1979	72.8	49	87.3	59	58.2	43	1.48	105	0
1978	70.8	95	84.5	103	57.1	81	2.76	49	0
1977	74.3	19	88.4	41	60.1	9	2.39	73	0
1976	69	123	82.3	128	55.7	103	3.41	22	0
1975	70.7	99	83.5	119	57.8	52	3.06	39	0
1974	72.9	45	87.8	47	58.1	47	0.91	121	0
1973	73.2	37	88.6	35	57.8	52	0.27	133	0
1972	71.8	73	86.2	77	57.4	67	2.35	75	0
1971	71.8	73	86.4	75	57.1	81	4.19	11	0
1970	73.8	24	88.6	35	58.9	27	3.78	15	0
1969	71.5	78	86.1	79	56.8	87	2.59	60	0
1968	70.9	94	84.5	103	57.3	72	3.39	23	0
1967	74.7	14	90.3	10	59	25	1.96	82	0
1966	70	110	84.4	106	55.7	103	1.44	106	0
1965	70.6	101	84.8	99	56.3	94	3.18	34	0
1964	68.6	129	81.6	132	55.6	107	5.92	2	0
1963	69.9	113	83.5	119	56.4	91	2.42	70	0
1962	69	123	83.3	123	54.6	119	1.71	97	0
1961	75.5	6	91.4	5	59.7	10	1.36	110	0
1960	70.6	101	86	83	55.2	113	2.53	62	0
1959	69.2	121	84.3	109	54.2	124	3.27	28	0
1958	73.5	34	88.5	38	58.5	37	2.90	44	0
1957	69	123	83.4	122	54.5	120	1.71	97	0
1956	68.9	128	84.1	112	53.8	128	4.72	7	0
1955	69.6	116	85	96	54.2	124	2.24	78	0
1954	66.4	134	80.7	133	52.1	134	3.81	14	0
1953	68.2	132	82.7	125	53.6	131	2.68	54	0
1952	69.6	116	84.5	103	54.8	118	3.18	34	0
1951	69.6	116	85.5	92	53.8	128	3.24	29	0
1950	70	110	84.2	111	55.7	103	5.34	5	0
1949	70.7	99	85.8	87	55.5	111	0.67	127	0
1948	68.6	129	82.4	127	54.9	117	3.38	24	0
1947	70	110	84.4	106	55.6	107	2.58	61	0
1946	72.2	65	89.3	25	55	115	2.81	47	0
1945	72.5	55	90.8	9	54.2	124	1.96	82	0
1944	71.7	75	88.8	32	54.5	120	1.88	89	0
1943	70.5	103	86.9	64	54.2	124	2.62	58	0
1942	72.8	49	89.3	25	56.4	91	2.92	43	0
1941	74	22	88.5	38	59.6	13	5.62	3	0
1940	76.3	3	93.3	1	59.3	18	1.21	113	0
1939	74.8	13	91.1	8	58.4	39	1.14	119	0
1938	75.2	10	92.7	2	57.7	57	1.94	84	0
1937	73.6	30	89.5	22	57.7	57	3.21	31	0
1936	75.3	9	91.8	4	58.7	32	1.86	91	0
1935	73.2	37	89.9	19	56.4	91	1.20	114	0
1934	73.7	29	90.1	12	57.3	72	3.21	31	0
1933									62
1932	72.5	55	87.4	57	57.7	57	0.85	122	0
1931	73.8	24	89.8	20	57.9	50	1.52	103	0
1930	73.8	24	88.8	32	58.7	32	1.16	118	0
1929	73.1	41	88.6	35	57.7	57	2.44	68	0
1928	72.4	60	87.3	59	57.5	65	1.94	84	0
1927	72.5	55	87.8	47	57.3	72	3.28	26	0
1926	74.4	17	90	17	58.8	30	3.47	19	0
1925	74.6	15	90.1	12	59.1	21	2.69	52	0
1924	72.4	60	87.5	56	57.3	72	2.07	80	0
1923	72.2	65	86.5	72	57.8	52	3.58	17	0
1922	75.5	6	91.3	6	59.7	10	2.23	79	0
1921	72.9	45	88.4	41	57.4	67	1.34	111	0
1920	71.3	86	86.7	69	55.9	99	2.61	59	0
1919	72.6	54	89	29	56.2	96	0.25	134	0
1918	73.3	36	88.4	41	58.3	41	2.45	67	0
1917	71.9	72	88.5	38	55.3	112	0.55	131	0
1916	69.1	122	83.7	115	54.4	122	4.74	6	0
1915	72.9	45	88	45	57.7	57	2.52	64	0
1914	72.7	52	87.7	51	57.7	57	1.39	109	0
1913	71.3	86	85.1	95	57.5	65	4.35	10	0
1912	69.5	119	83.5	119	55.6	107	1.92	86	0
1911	71.5	78	86.1	79	56.9	84	1.91	88	0
1910	70.5	103	85.9	86	55.1	114	0.74	125	0
1909	70.2	107	84.4	106	56	98	3.07	38	0
1908	72.1	69	86.7	69	57.4	67	1.87	90	0
1907	69	123	82.2	129	55.8	102	4.09	12	0
1906	73.1	41	87.4	57	58.7	32	2.75	51	0
1905	72.7	52	87.1	62	58.2	43	2.29	76	0
1904	72.9	45	87.7	51	58.2	43	3.21	31	0
1903	72.4	60	86.1	79	58.6	36	3.28	26	0
1902	69.9	113	83.9	113	55.9	99	2.53	62	0
1901	71.6	76	86.2	77	57	83	2.00	81	0
1899	70.1	109	82.6	126	57.7	57	2.29	76	1
1898	74.3	19	90.1	12	58.4	39	1.59	102	0
1897	71.5	78	89.5	22	53.5	132	3.17	36	3
1896							2.97	42	15
1895	71.3	86	89.2	27	53.4	133	1.19	115	1
1894	71.3	86	88.9	30	53.7	130	1.42	107	0
1885	71.4	84	84.6	102	58.1	47	5.36	4	0
1884	71.2	90	84.7	101	57.7	57	7.03	1	0
1883	72.1	69	86.9	64	57.4	67	0.01	135	0
1882	73.1	41	86.8	67	59.4	17	0.71	126	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2021	78
2015	76.8
1940	76.3
2025	76
2023	75.9
2024	75.5
1961	75.5
1922	75.5
1936	75.3
1938	75.2

Coldest
Year	Mean, °F
1954	66.4
1993	66.5
1953	68.2
1980	68.5
1964	68.6
1948	68.6
1956	68.9
1995	69
1976	69
1962	69
More years share the last value

Wettest
Year	Precipitation, in
1884	7.03
1964	5.92
1941	5.62
1885	5.36
1950	5.34
1916	4.74
1956	4.72
1989	4.64
1987	4.38
1913	4.35

Driest
Year	Precipitation, in
1883	0.01
1919	0.25
1973	0.27
2025	0.44
1917	0.55
2026	0.63
2017	0.65
2021	0.66
1949	0.67
1882	0.71

The hottest, coldest and wettest days

Hottest day: 106°F; 21 August 2026
Coldest night: 45°F; 11 June 2026, 8 June 2026
Wettest day: 0.20 in; 29 June 2026

Every month, season and year

Months

Seasons

Years

Lewiston, ID the day's answers

All-time records

Every answer in words

Summer 2026 brought 0.63 in of precipitation in Lewiston, ID, the driest summer since 2025, 6th driest of 135.
The hottest day of summer 2026 in Lewiston, ID: 106°F on Friday 21 August 2026.
The coldest night of summer 2026 in Lewiston, ID: a low of 45°F on Thursday 11 June 2026 and Monday 8 June 2026.
The wettest day of summer 2026 in Lewiston, ID: 0.20 in on Monday 29 June 2026.