Seattle Tacoma, WA: December

31 December 2025: December 2025 averaged 45.2°F in Seattle Tacoma, WA, the warmest December since 2023, tied 3rd warmest of 81 (with 1969).

December 2025

Mean temperature: 45.2°F; Warmest since 2023; 3rd warmest of 81
Precipitation: 7.37 in; Wettest since 2023; 19th wettest of 81

A normal December in Seattle Tacoma, WA (1991 to 2020): a mean temperature of 41.5°F, between 38.7°F and 44.2°F in eight years of ten and 5.66 in of precipitation, between 2.62 in and 8.99 in in eight years of ten.

The mean temperature of every December in Seattle Tacoma, WA since 1945: 45.2°F in 2025; the highest is 45.5°F, in 2023.

Normal range, 38.7 to 44.2°F

Every year, ranked, as a table

Every December in Seattle Tacoma, WA from 1945 to 2025, 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
2025	45.2	3	49.2	8	41.2	1	7.37	19
2024	44.2	11	49.6	6	38.8	17	5.49	48
2023	45.5	1	50.6	1	40.4	4	8.48	10
2022	38.8	63	43.2	65	34.4	58	7.55	17
2021	38	68	41.9	69	34.2	61	4.08	65
2020	44.4	9	49.8	3	38.9	15	6.65	29
2019	44.5	8	48.2	15	40.7	2	7.96	15
2018	44.2	11	48.9	10	39.4	12	6.08	37
2017	40	51	45.5	46	34.5	56	5.43	49
2016	38	68	41.9	69	34	62	3.87	68
2015	43	19	47.1	27	38.9	15	11.21	2
2014	45.3	2	50.3	2	40.3	6	4.79	58
2013	39.7	54	44.6	54	34.8	55	1.66	80
2012	41.5	37	45	52	37.9	23	6.85	25
2011	39.2	57	44.3	56	34	62	2.24	77
2010	43.2	18	47.9	17	38.5	19	8.69	8
2009	37.9	70	43.7	60	32.1	73	2.75	74
2008	36.9	73	40.8	79	33	70	4.10	63
2007	39.8	53	43.6	62	36	41	9.08	5
2006	40.6	47	45.8	42	35.4	50	7.30	20
2005	42.6	22	47.4	21	37.9	23	6.85	25
2004	42.5	23	46.9	31	38	22	4.37	62
2003	41.7	33	46.6	36	36.9	34	3.88	67
2002	43	19	47.8	18	38.2	21	5.98	39
2001	41.5	37	46.7	33	36.3	39	5.89	41
2000	40.7	43	46	40	35.5	49	2.51	76
1999	42	29	46.1	39	37.8	25	5.06	54
1998	39.9	52	44.2	58	35.6	46	8.98	6
1997	41.5	37	47.4	21	35.6	46	2.63	75
1996	39.2	57	44.2	58	34.3	59	10.18	3
1995	42.4	24	47.5	20	37.3	31	6.37	33
1994	41.7	33	46.5	37	36.9	34	8.15	14
1993	41.4	42	47.1	27	35.7	45	4.48	61
1992	38.8	63	43.2	65	34.3	59	4.09	64
1991	43.7	15	48.4	14	39	14	3.31	73
1990	35.2	81	40.1	81	30.4	81	3.63	71
1989	42.9	21	47.3	24	38.5	19	4.79	58
1988	41.9	31	46.7	33	37.1	33	3.48	72
1987	39.2	57	44.5	55	33.9	65	6.11	36
1986	41.9	31	47.3	24	36.6	36	3.67	70
1985	36.1	78	41.4	75	30.9	79	1.78	79
1984	36.8	74	41.5	74	32.1	73	4.95	57
1983	36.1	78	40.7	80	31.5	76	5.02	55
1982	40.7	43	45.6	44	35.9	42	6.86	24
1981	41.7	33	46	40	37.3	31	5.56	45
1980	44	14	48.2	15	39.9	9	7.39	18
1979	44.1	13	48.9	10	39.3	13	11.85	1
1978	37.5	71	42.7	67	32.2	72	1.37	81
1977	42.1	28	46.7	33	37.6	26	6.47	30
1976	44.7	7	49.8	3	39.6	10	1.86	78
1975	41.5	37	46.5	37	36.5	37	7.66	16
1974	42.4	24	47.2	26	37.6	26	6.45	32
1973	44.4	9	48.5	13	40.2	7	8.33	11
1972	38.1	67	41.6	72	34.5	56	8.98	6
1971	37.5	71	41.8	71	33.2	67	6.67	28
1970	38.9	61	42.7	67	35.2	53	8.28	13
1969	45.2	3	49.7	5	40.7	2	5.68	43
1968	36.6	75	41.2	77	32	75	8.55	9
1967	41.5	37	45.5	46	37.6	26	4.72	60
1966	43.5	17	47.4	21	39.6	10	8.31	12
1965	40.4	48	45.2	49	35.6	46	7.10	23
1964	36.4	76	41.3	76	31.5	76	5.53	46
1963	40.7	43	45.6	44	35.9	42	5.79	42
1962	42.2	27	47	29	37.5	30	5.22	52
1961	39.3	56	43.7	60	34.9	54	5.32	50
1960	39.5	55	44.9	53	34	62	3.75	69
1959	40.3	49	45.1	50	35.4	50	6.83	27
1958	44.9	5	49.6	6	40.1	8	7.15	21
1957	43.6	16	48.6	12	38.7	18	5.52	47
1956	40.2	50	45.1	50	35.3	52	5.62	44
1955	38.3	66	43.6	62	33.1	69	9.50	4
1954	40.7	43	45.7	43	35.8	44	5.20	53
1953	42.3	26	46.9	31	37.6	26	5.92	40
1952	41.6	36	47	29	36.3	39	5.02	55
1951	36.4	76	41.6	72	31.2	78	3.92	66
1950	44.8	6	49.1	9	40.4	4	7.14	22
1949	38.4	65	43.5	64	33.2	67	5.30	51
1948	36	80	41.2	77	30.8	80	6.13	35
1947	42	29	47.6	19	36.4	38	6.02	38
1946	38.9	61	44.3	56	33.5	66	6.47	30
1945	39	60	45.5	46	32.4	71	6.31	34

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2023	45.5
2014	45.3
2025	45.2
1969	45.2
1958	44.9
1950	44.8
1976	44.7
2019	44.5
2020	44.4
1973	44.4

Coldest
Year	Mean, °F
1990	35.2
1948	36
1985	36.1
1983	36.1
1964	36.4
1951	36.4
1968	36.6
1984	36.8
2008	36.9
1978	37.5
More years share the last value

Wettest
Year	Precipitation, in
1979	11.85
2015	11.21
1996	10.18
1955	9.50
2007	9.08
1998	8.98
1972	8.98
2010	8.69
1968	8.55
2023	8.48

Driest
Year	Precipitation, in
1978	1.37
2013	1.66
1985	1.78
1976	1.86
2011	2.24
2000	2.51
1997	2.63
2009	2.75
1991	3.31
1988	3.48

The hottest, coldest and wettest days

Hottest day: 57°F; 15 December 2025, 10 December 2025
Coldest night: 30°F; 28 December 2025
Wettest day: 1.60 in; 10 December 2025

Every month, season and year

Months

Seasons

Years

Seattle Tacoma, WA the day's answers

All-time records

Every answer in words

December 2025 brought 7.37 in of precipitation in Seattle Tacoma, WA (1 day missing), the wettest December since 2023, 19th wettest of 81.
The hottest day of December 2025 in Seattle Tacoma, WA: 57°F on Monday 15 December 2025 and Wednesday 10 December 2025.
The coldest night of December 2025 in Seattle Tacoma, WA: a low of 30°F on Sunday 28 December 2025.
The wettest day of December 2025 in Seattle Tacoma, WA: 1.60 in on Wednesday 10 December 2025.