Mount Shasta, CA: December

31 December 2025: December 2025 averaged 41.5°F in Mount Shasta, CA, the warmest December since 1958 (1984 excluded: 31 of 31 days missing; 1985 excluded: 31 of 31 days missing; 1986 excluded: 31 of 31 days missing; 2 more years excluded for missing days), 2nd warmest of 73.

December 2025

Mean temperature: 41.5°F; Warmest since 1958; 2nd warmest of 73
Precipitation: 11.63 in; Wettest since 2014; 10th wettest of 72

A normal December in Mount Shasta, CA (1991 to 2020): a mean temperature of 36.1°F, between 32.1°F and 37.3°F in eight years of ten and 6.72 in of precipitation, between 0.66 in and 13.27 in in eight years of ten.

The mean temperature of every December in Mount Shasta, CA since 1948: 41.5°F in 2025; the highest is 43.1°F, in 1958.

Normal range, 32.1 to 37.3°F

Every year, ranked, as a table

Every December in Mount Shasta, CA from 1948 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	Days missing
2025	41.5	2	50.9	3	32	5	11.63	10	0
2024	38.7	8	46.7	19	30.6	9	8.74	19	0
2023	40.6	5	48.8	8	32.4	3	7.00	27	0
2022	33.7	52	40.7	58	26.8	39	5.80	35	0
2021	35.3	43	42.5	46	28.2	31	4.05	45	0
2020	36.1	37	46.2	25	26	45	1.88	56	0
2019	36.6	29	42.8	40	30.5	13	6.25	32	0
2018	35.6	41	43.5	35	27.8	33	3.68	47	0
2017	37.2	19	48.1	12	26.2	43	0.29	70	0
2016	33.1	57	41.8	49	24.4	55	4.69	43	0
2015	35.3	43	41.1	52	29.4	22	7.46	25	0
2014	41.1	3	46.7	19	35.4	1	12.83	8	0
2013	34.5	48	46.6	21	22.4	68	0.24	71	0
2012	32.9	58	39.7	63	26	45	10.43	15	0
2011	36.5	32	48.8	8	24.1	60	0.33	69	0
2010	36.7	26	41.8	49	31.7	6	11.33	12	1
2009	32.5	59	41	55	24	62	4.34	44	0
2008	32.1	61	40.7	58	23.5	66	1.61	58	0
2007	32	62	38.7	64	25.4	51	7.18	26	0
2006	38.6	9	48.3	10	28.8	27	7.99	22	0
2005	37	22	44.4	32	29.5	20	14.95	4	0
2004	37.1	21	45.2	28	29	25	10.53	14	0
2003	36.2	35	42.6	43	29.9	14	9.83	17	0
2002	36.2	35	42.9	38	29.5	20	17.44	2	0
2001	34.6	47	40	61	29.3	23	8.23	20	0
2000	37.5	16	47.3	16	27.8	33	0.88	63	0
1999	36.5	32	46.3	24	26.7	40	0.80	64	0
1998	31.5	64	39.8	62	23.2	67	1.14	60	0
1997	35.4	42	43.3	37	27.6	35			0
1996	36.7	26	42.6	43	30.8	8			1
1995					30.6	9	11.59	11	4
1994	33.2	56	41	55	25.7	49	2.91	52	1
1993	34.4	49	44	34	25	53	7.54	24	1
1992	31.8	63	38.5	65	25.2	52	14.28	5	0
1991	36.6	29	46.5	22	26.7	40	3.07	51	0
1990	29.5	70	40.5	60	17.9	74	0.75	65	1
1989	37.6	15	51.4	2	23.7	65	0.07	72	0
1988	34.9	45	45.3	27	24.6	54	3.49	49	0
1983	35.7	40	41.7	51	29.7	16	11.22	13	0
1982	33.5	54	40.9	57	26.1	44	8.95	18	0
1981	37.9	14	45.1	29	30.6	9	8.21	21	0
1980	38.9	7	49.3	6	28.5	29	5.26	39	0
1979	38.1	12	48	13	28.2	31	5.44	37	0
1978	30.3	68	41.1	52	19.5	73	0.59	67	0
1977	36.6	29	45.8	26	27.4	36	7.88	23	0
1976	37.4	18	50.6	4	24.2	58	0.73	66	0
1975	36.8	25	45	30	28.6	28	1.74	57	0
1974	34.9	45	42.6	43	27.1	38	5.76	36	0
1973	36.7	26	42.7	42	30.6	9	5.34	38	0
1972	28.9	72	35.8	72	22.1	71	3.10	50	1
1971	29.3	71	36.3	71	22.3	69	4.84	42	0
1970	30.5	67	37	70	24	62	6.58	31	0
1969	38	13	44.9	31	31.1	7	13.09	6	0
1968	31.3	65	38.5	65	24.1	60	11.85	9	0
1967	30.2	69	38.2	69	22.2	70	6.23	33	0
1966	37	22	44.4	32	29.6	18	6.92	28	0
1965	33.6	53	42.8	40	24.4	55	5.18	40	0
1964	35.9	38	42.1	47	29.7	16	13.03	7	0
1963	38.4	10	47.6	15	29.2	24	0.94	61	0
1962	39.5	6	49.3	6	29.8	15	3.64	48	0
1961	34.2	50	42.1	47	26.3	42	3.76	46	0
1960	37.5	16	46.5	22	28.4	30	6.79	29	0
1959	36.9	24	48	13	25.7	49	1.96	55	0
1958	43.1	1	53.7	1	32.5	2	2.39	54	0
1957	37.2	19	47.1	17	27.3	37	6.11	34	0
1956	36.3	34	48.3	10	24.3	57	0.40	68	0
1955	35.9	38	42.9	38	28.9	26	17.48	1	0
1954	33.5	54	41.1	52	25.9	47	6.62	30	0
1953	38.4	10	47.1	17	29.6	18	1.27	59	0
1952	32.2	60	38.5	65	25.8	48	17.34	3	0
1951	31.2	66	38.5	65	24	62	9.88	16	0
1950	40.9	4	49.8	5	32.1	4	5.08	41	0
1949	33.8	51	43.4	36	24.2	58	0.93	62	0
1948	28	73	35.6	73	20.4	72	2.82	53	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1958	43.1
2025	41.5
2014	41.1
1950	40.9
2023	40.6
1962	39.5
1980	38.9
2024	38.7
2006	38.6
1963	38.4
More years share the last value

Coldest
Year	Mean, °F
1948	28
1972	28.9
1971	29.3
1990	29.5
1967	30.2
1978	30.3
1970	30.5
1951	31.2
1968	31.3
1998	31.5

Wettest
Year	Precipitation, in
1955	17.48
2002	17.44
1952	17.34
2005	14.95
1992	14.28
1969	13.09
1964	13.03
2014	12.83
1968	11.85
2025	11.63

Driest
Year	Precipitation, in
1989	0.07
2013	0.24
2017	0.29
2011	0.33
1956	0.40
1978	0.59
1976	0.73
1990	0.75
1999	0.80
2000	0.88

The hottest, coldest and wettest days

Hottest day: 66°F; 13 December 2025
Coldest night: 23°F; 29 December 2025
Wettest day: 2.78 in; 24 December 2025

Every month, season and year

Months

Seasons

Years

Mount Shasta, CA the day's answers

All-time records

Every answer in words

December 2025 brought 11.63 in of precipitation in Mount Shasta, CA, the wettest December since 2014, 10th wettest of 72.
The hottest day of December 2025 in Mount Shasta, CA: 66°F on Saturday 13 December 2025.
The coldest night of December 2025 in Mount Shasta, CA: a low of 23°F on Monday 29 December 2025.
The wettest day of December 2025 in Mount Shasta, CA: 2.78 in on Wednesday 24 December 2025.