Rapid City, SD: December

31 December 2025: December 2025 averaged 34.9°F in Rapid City, SD, tying the record for the warmest December, set in 1957, in 84 years since 1942; provisional.

December 2025

Mean temperature: 34.9°F; Ties the record; Warmest of 84, provisional
Precipitation: 0.17 in; Driest since 2006; 19th driest of 84

A normal December in Rapid City, SD (1991 to 2020): a mean temperature of 26.9°F, between 17.7°F and 31.9°F in eight years of ten and 0.28 in of precipitation, between 0.04 in and 0.73 in in eight years of ten.

The mean temperature of every December in Rapid City, SD since 1942: 34.9°F in 2025, tied for the highest with 1957.

Normal range, 17.7 to 31.9°F

Every year, ranked, as a table

Every December in Rapid City, SD from 1942 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	34.9	1	49.3	1	20.5	5	0.17	65
2024	32.3	9	46	6	18.6	18	0.46	31
2023	33.7	4	47.1	4	20.2	8	0.32	47
2022	19.9	69	31.7	68	8.1	70	0.70	12
2021	26.3	45	37.8	44	14.8	47	0.61	16
2020	32.3	9	45.6	9	19	13	0.29	50
2019	28.7	31	39.5	37	17.9	23	0.25	54
2018	27	40	38	43	15.9	37	1.14	3
2017	23.6	55	36.4	50	10.8	63	0.27	52
2016	16.6	82	27.8	81	5.3	81	0.77	9
2015	26.2	46	37	48	15.4	43	0.63	15
2014	28.3	36	40.8	32	15.7	41	0.42	33
2013	18.8	73	30.8	71	6.7	78	0.56	22
2012	24.9	53	37.6	45	12.3	56	0.25	54
2011	28	38	39.9	36	16	36	0.29	50
2010	24.4	54	34.5	58	14.3	50	0.61	16
2009	16.1	83	25.1	83	7.2	75	0.72	11
2008	17.8	77	29.8	74	5.7	80	0.37	36
2007	22.2	62	34.1	60	10.4	64	0.51	26
2006	29.3	27	43.3	14	15.3	45	0.01	82
2005	25.4	49	35.9	51	15	46	0.25	54
2004	31.8	12	44.7	11	18.9	14	0.06	76
2003	30.5	15	41	30	19.9	9	0.25	54
2002	31.7	13	45.1	10	18.3	20	0.03	81
2001	28.9	28	41.4	26	16.4	32	trace	84
2000	16.7	81	28.3	78	5.1	82	0.11	72
1999	33.3	5	46.2	5	20.4	7	0.21	60
1998	26.8	42	40.9	31	12.6	53	0.06	76
1997	30.3	19	42	20	18.6	18	0.08	73
1996	17.9	76	28.6	77	7.1	76	1.25	2
1995	25.4	49	37.3	47	13.5	52	0.13	69
1994	30.3	19	41.1	28	19.4	11	0.35	43
1993	31.4	14	42.4	17	20.5	5	0.53	24
1992	19	71	30.1	73	7.9	72	0.57	20
1991	32.7	8	45.8	7	19.5	10	0.04	78
1990	17.7	78	31	70	4.5	83	0.33	46
1989	19.4	70	29.6	75	9.1	68	0.82	5
1988	28.4	35	40.6	34	16.1	34	0.46	31
1987	28.9	28	41.5	25	16.2	33	0.31	49
1986	30.5	15	43.4	13	17.6	27	0.01	82
1985	21	68	32.3	66	9.7	65	0.77	9
1984	21.4	67	34.7	57	8.1	70	0.38	35
1983	8.1	84	17	84	-0.9	84	0.47	29
1982	28.6	32	39.4	38	17.8	25	0.36	39
1981	25.8	47	35.8	52	15.8	38	0.35	43
1980	30.2	21	41.3	27	19.2	12	0.66	14
1979	33.1	7	48.1	3	18.2	21	0.07	75
1978	17	80	27.4	82	6.7	78	0.25	54
1977	21.8	64	31.3	69	12.4	54	0.36	39
1976	26.8	42	38.8	40	14.8	47	0.41	34
1975	29.4	26	40.1	35	18.7	17	1.65	1
1974	28.9	28	42	20	15.8	38	0.12	70
1973	25.3	51	35.2	55	15.5	42	0.54	23
1972	18.6	74	29.6	75	7.5	73	0.34	45
1971	23.3	56	35.5	53	11.1	62	0.15	67
1970	21.8	64	34.1	60	9.6	66	0.61	16
1969	28.2	37	39.4	38	17	30	0.57	20
1968	18.5	75	28	79	8.9	69	0.58	19
1967	22.5	60	33.5	63	11.5	59	0.89	4
1966	26.7	44	36.5	49	16.9	31	0.79	7
1965	33.3	5	45.7	8	20.9	4	0.12	70
1964	18.9	72	30.5	72	7.3	74	0.78	8
1963	22.7	59	33.2	64	12.2	57	0.32	47
1962	30.1	22	42.7	15	17.5	28	0.19	62
1961	23	58	34.4	59	11.5	59	0.51	26
1960	25	52	35.3	54	14.7	49	0.80	6
1959	34.2	3	44.5	12	23.9	1	0.26	53
1958	27	40	38.6	41	15.4	43	0.37	36
1957	34.9	1	48.2	2	21.6	3	0.04	78
1956	29.8	24	41.6	24	18.1	22	0.36	39
1955	21.8	64	32.3	66	11.3	61	0.68	13
1954	32.3	9	42.6	16	22.1	2	0.25	54
1953	30.4	17	41.9	22	18.9	14	0.18	63
1952	30	23	42.2	18	17.9	23	0.08	73
1951	17.4	79	27.9	80	6.9	77	0.53	24
1950	28.5	33	40.8	32	16.1	34	0.04	78
1949	22.1	63	35.1	56	9.2	67	0.47	29
1948	23.1	57	33.8	62	12.4	54	0.48	28
1947	30.4	17	41.9	22	18.8	16	0.15	67
1946	28.5	33	41.1	28	15.8	38	0.21	60
1945	22.3	61	32.5	65	12.2	57	0.17	65
1944	25.7	48	37.4	46	14	51	0.37	36
1943	29.7	25	42.2	18	17.2	29	0.18	63
1942	27.9	39	38.1	42	17.7	26	0.36	39

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2025	34.9
1957	34.9
1959	34.2
2023	33.7
1999	33.3
1965	33.3
1979	33.1
1991	32.7
2024	32.3
2020	32.3
More years share the last value

Coldest
Year	Mean, °F
1983	8.1
2009	16.1
2016	16.6
2000	16.7
1978	17
1951	17.4
1990	17.7
2008	17.8
1996	17.9
1968	18.5

Wettest
Year	Precipitation, in
1975	1.65
1996	1.25
2018	1.14
1967	0.89
1989	0.82
1960	0.80
1966	0.79
1964	0.78
2016	0.77
1985	0.77

Driest
Year	Precipitation, in
2001	trace
2006	0.01
1986	0.01
2002	0.03
1991	0.04
1957	0.04
1950	0.04
2004	0.06
1998	0.06
1979	0.07

The hottest, coldest and wettest days

Hottest day: 71°F; 25 December 2025
Coldest night: 0°F; 29 December 2025
Wettest day: 0.06 in; 12 December 2025, 3 December 2025

Every month, season and year

Months

Seasons

Years

Rapid City, SD the day's answers

All-time records

Every answer in words

December 2025 brought 0.17 in of precipitation in Rapid City, SD, the driest December since 2006, tied 19th driest of 84 (with 1945).
The hottest day of December 2025 in Rapid City, SD: 71°F on Thursday 25 December 2025.
The coldest night of December 2025 in Rapid City, SD: a low of 0°F on Monday 29 December 2025.
The wettest day of December 2025 in Rapid City, SD: 0.06 in on Friday 12 December 2025 and Wednesday 3 December 2025.