Rockford, IL: December

31 December 2025: December 2025 averaged 23.6°F in Rockford, IL, the coldest December since 2013, tied 37th coldest of 117 (with 2009 and 1937).

December 2025

Mean temperature: 23.6°F; Coldest since 2013; 37th coldest of 117
Precipitation: 1.78 in; Wettest since 2023; 59th wettest of 122

A normal December in Rockford, IL (1991 to 2020): a mean temperature of 27.5°F, between 19.8°F and 32.6°F in eight years of ten and 1.79 in of precipitation, between 0.77 in and 3.38 in in eight years of ten.

The mean temperature of every December in Rockford, IL since 1897: 23.6°F in 2025; the lowest is 12.5°F, in 2000.

Normal range, 19.8 to 32.6°F

Every year, ranked, as a table

Every December in Rockford, IL from 1895 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	23.6	79	32	73	15.2	87	1.78	59	0
2024	29.6	33	37	33	22.2	34	1.13	83	0
2023	36.3	2	42.3	5	30.4	2	3.13	17	0
2022	26.3	61	34.5	56	18.1	70	2.56	27	0
2021	34.9	5	44.2	1	25.7	12	2.42	32	0
2020	31.4	20	39.7	15	23.1	29	1.76	60	0
2019	32.6	13	41.2	6	24	20	1.68	66	0
2018	30.8	24	38.1	25	23.5	23	2.66	25	0
2017	24.6	72	32.3	71	16.8	77	0.49	117	0
2016	23.8	77	30.1	92	17.5	71	1.88	51	0
2015	37.7	1	43.4	3	32.1	1	4.65	2	0
2014	30.5	26	36	43	24.9	16	0.93	91	0
2013	19.4	105	28.3	103	10.5	109	1.69	65	0
2012	33.4	9	40.3	13	26.5	7	2.49	30	0
2011	32.6	13	39.7	15	25.4	14	2.06	44	0
2010	20.4	100	27.8	105	13	101	1.73	62	0
2009	23.6	79	30.2	90	17	75	3.55	9	0
2008	19.4	105	28.5	101	10.4	110	4.01	4	0
2007	25.1	70	31.4	79	18.7	61	3.27	15	0
2006	31.3	22	39.3	20	23.3	26	2.52	29	0
2005	19.9	103	26.5	111	13.4	96	1.00	87	0
2004	26.3	61	34.2	62	18.5	64	0.65	105	0
2003	30	30	37.5	30	22.5	31	3.20	16	0
2002	28.7	41	37	33	20.5	45	0.78	100	0
2001	31.8	17	39.4	19	24.2	19	0.93	91	0
2000	12.5	117	21.5	119	3.6	120	1.93	49	0
1999	26.8	56	34.9	54	18.6	62	1.94	48	0
1998	31.8	17	41	10	22.7	30	0.89	95	0
1997	27.7	47	33.1	68	22.3	32	0.84	96	0
1996	24.1	75	29.9	93	18.4	67	2.14	43	0
1995	23.3	82	30.5	86	16.1	81	0.49	117	0
1994	30.3	27	37.4	31	23.2	27	1.26	76	0
1993	27.4	50	33.7	65	21.2	41	1.23	79	0
1992	25.8	64	33.1	68	18.5	64	3.36	11	0
1991	28.2	44	36.4	40	20	52	1.82	54	0
1990	23.7	78	32	73	15.4	84	2.45	31	0
1989	14.2	114	22.5	116	5.9	115	0.51	115	0
1988	26.3	61	35.5	48	17.1	74	1.75	61	0
1987	29.4	36	35.4	49	23.4	24	4.03	3	0
1986	28.1	45	34.3	59	21.9	35	0.66	103	0
1985	14.6	113	24.2	115	5	117	2.30	39	0
1984	29.2	37	37.9	29	20.5	45	3.29	14	0
1983	12.7	116	19.6	120	5.8	116	2.31	37	0
1982	33	11	40.9	11	25.2	15	3.65	6	0
1981	22.9	83	30.5	86	15.3	86	0.77	101	0
1980	25.3	68	32.5	70	18.2	69	2.71	23	0
1979	28.9	40	38.2	24	19.7	55	2.24	40	0
1978	21.9	90	29.1	99	14.6	91	2.76	22	0
1977	19.8	104	27.2	109	12.5	104	1.87	52	0
1976	14.9	112	25.5	113	4.4	118	0.37	119	0
1975	26.9	54	33.9	63	20	52	1.95	47	0
1974	26.7	58	33.3	66	20.1	51	1.63	67	0
1973	24.1	75	31.9	77	16.3	79	3.32	12	0
1972	21.6	94	28.8	100	14.4	93	2.37	33	0
1971	31.4	20	38	27	24.9	16	5.04	1	0
1970	26.6	60	34.7	55	18.5	64	1.37	74	0
1969	24.2	73	31.6	78	16.8	77	1.20	80	0
1968	25.3	68	32.3	71	18.3	68	3.31	13	0
1967	27.7	47	35.1	52	20.3	49	1.55	70	0
1966	24.7	71	32	73	17.5	71	2.16	41	0
1965	32.3	16	39.7	15	24.9	16	3.03	19	0
1964	22.8	85	31.3	80	14.4	93	0.91	93	0
1963	13.1	115	22.3	117	4	119	0.79	98	0
1962	22	89	30.7	84	13.4	96	0.50	116	0
1961	22.8	85	30.4	89	15.2	87	0.97	88	0
1960	21.9	90	31.1	81	12.7	102	0.64	106	0
1959	32.5	15	39.1	21	26	11	2.77	21	0
1958	18.7	109	27.4	106	9.9	111	0.75	102	0
1957	31	23	39.8	14	22.3	32	3.06	18	0
1956	28.5	42	36.3	41	20.6	43	0.97	88	0
1955	21.6	94	29.9	93	13.4	96	0.37	119	0
1954	27.1	52	33.9	63	20.4	47	2.37	33	0
1953	27.6	49	35.7	46	19.5	56	2.81	20	0
1952	29.2	37	35	53	23.4	24	1.57	69	0
1951	21.9	90	31	82	12.7	102	1.80	58	0
1950	18.8	108	27.4	106	9.3	113	2.69	24	1
1949	29.7	32	38.7	23	20.6	43	1.86	53	0
1948	28.3	43	36.3	41	20.4	47	1.19	81	0
1947	29	39	36.8	36	21.1	42	1.11	84	0
1945	20.3	101	28.2	104	12.4	105	2.53	28	0
1944	21.8	93	29.9	93	13.3	99	1.45	71	2
1943	26.9	54	36.6	39	17.5	71	0.59	109	3
1942	21.6	94	29.9	93	13.3	99			0
1941	34	7	41.1	8	26.9	6	2.02	46	0
1940	29.5	35	35.7	46	23.2	27	0.66	103	0
1939	33.2	10	40.9	11	25.5	13	0.33	121	0
1938	27	53	34.4	58	19.5	56	1.41	72	0
1937	23.6	79	30.2	90	17	75	1.02	86	0
1936	29.9	31	38.1	25	21.7	38	3.91	5	0
1935	22.3	88	29.3	97	15.6	83	0.95	90	1
1934	22.9	83	30.5	86	15.4	84	1.39	73	0
1933	27.9	46	35.9	44	19.8	54	0.56	111	0
1932	25.4	67	34.5	56	16.3	79	1.82	54	0
1931	34.3	6	41.1	8	27.5	4	2.32	36	0
1930	26.7	58	34.3	59	19.1	59	0.53	113	0
1929	26.8	56	34.3	59	19.2	58	0.58	110	0
1928	29.6	33	38	27	21.3	40	1.82	54	0
1927	24.2	73	33.3	66	15	89	1.81	57	0
1926	22.8	85	30.6	85	14.9	90	0.83	97	0
1925	20.1	102	29.2	98	11	108	1.31	75	0
1924	18.1	110	26.9	110	9.2	114	1.26	76	0
1923	35.5	4	43.6	2	27.5	4	2.31	37	0
1922	25.7	65	35.4	49	15.9	82	1.11	84	0
1921	27.2	51	35.9	44	18.6	62	3.56	8	1
1920	30.3	27	37.4	31	21.7	38	2.03	45	3
1919			22.1	118			1.26	76	4
1918	33	11	39.6	18	26.5	7	2.37	33	0
1917							0.61	107	10
1916	21.4	97	31	82	11.9	106	1.72	63	0
1915	25.5	66	32	73	19	60	0.52	114	1
1914	19.4	105	27.3	108	11.6	107	2.16	41	0
1913	33.7	8	41.2	6	26.2	9	0.55	112	0
1912	30.6	25	38.9	22	21.9	35	1.14	82	2
1911	30.2	29	36.7	38	23.7	21	1.91	50	0
1910	21.3	98	28.5	101	13.9	95	0.60	108	2
1909	17.1	111	24.5	114	9.7	112	3.48	10	0
1908			37	33	21.9	35	0.79	98	5
1907	31.5	19	36.8	36	26.2	9	0.17	122	0
1906					20.2	50	1.70	64	7
1905	35.8	3	43.4	3	28.3	3	3.58	7	0
1897	20.5	99	26.5	111	14.5	92	1.62	68	0
1896			35.3	51	23.7	21	0.90	94	5
1895							2.59	26	8

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	37.7
2023	36.3
1905	35.8
1923	35.5
2021	34.9
1931	34.3
1941	34
1913	33.7
2012	33.4
1939	33.2

Coldest
Year	Mean, °F
2000	12.5
1983	12.7
1963	13.1
1989	14.2
1985	14.6
1976	14.9
1909	17.1
1924	18.1
1958	18.7
1950	18.8

Wettest
Year	Precipitation, in
1971	5.04
2015	4.65
1987	4.03
2008	4.01
1936	3.91
1982	3.65
1905	3.58
1921	3.56
2009	3.55
1909	3.48

Driest
Year	Precipitation, in
1907	0.17
1939	0.33
1976	0.37
1955	0.37
2017	0.49
1995	0.49
1962	0.50
1989	0.51
1915	0.52
1930	0.53

The hottest, coldest and wettest days

Hottest day: 50°F; 28 December 2025
Coldest night: -6°F; 14 December 2025
Wettest day: 0.89 in; 28 December 2025

Every month, season and year

Months

Seasons

Years

Rockford, IL the day's answers

All-time records

Every answer in words

December 2025 brought 1.78 in of precipitation in Rockford, IL, the wettest December since 2023, 59th wettest of 122.
The hottest day of December 2025 in Rockford, IL: 50°F on Sunday 28 December 2025.
The coldest night of December 2025 in Rockford, IL: a low of -6°F on Sunday 14 December 2025.
The wettest day of December 2025 in Rockford, IL: 0.89 in on Sunday 28 December 2025.