Rockford, IL: May

31 May 2026: May 2026 averaged 59.5°F in Rockford, IL, the coldest May since 2025, tied 57th coldest of 125 (with 1942).

May 2026

Mean temperature: 59.5°F; Coldest since 2025; 57th coldest of 125
Precipitation: 0.52 in; Driest since 1992; 2nd driest of 126

A normal May in Rockford, IL (1991 to 2020): a mean temperature of 60.2°F, between 56.8°F and 64.9°F in eight years of ten and 3.65 in of precipitation, between 1.60 in and 6.78 in in eight years of ten.

The mean temperature of every May in Rockford, IL since 1893: 59.5°F in 2026; the lowest is 51.4°F, in 1966.

Normal range, 56.8 to 64.9°F

Every year, ranked, as a table

Every May in Rockford, IL from 1893 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	59.5	68	73.5	41	45.4	98	0.52	125	0
2025	59.1	73	71.4	64	46.8	83	2.17	102	0
2024	64.2	16	76.9	12	51.5	20	3.96	53	0
2023	61.5	40	75.2	26	47.9	65	2.00	103	0
2022	63.5	21	73.9	37	53.2	11	2.54	92	0
2021	60.8	52	71.3	66	50.2	40	2.36	97	0
2020	59.4	70	69.5	82	49.3	48	4.03	51	0
2019	58.2	82	68.3	97	48.1	61	8.93	2	0
2018	66	5	77.5	9	54.6	4	4.68	35	0
2017	58.5	80	69.3	84	47.7	68	4.90	28	0
2016	60.9	50	72.6	49	49.1	51	3.12	77	0
2015	61.5	40	71.5	59	51.5	20	4.85	29	0
2014	61	49	72.5	50	49.5	47	2.33	98	0
2013	62	31	73	45	51.1	24	3.14	76	0
2012	65.1	10	77.7	8	52.6	15	1.62	109	0
2011	59.6	66	70.4	74	48.9	54	3.94	55	0
2010	61.6	38	72	53	51.1	24	5.82	17	0
2009	59.1	73	70.6	72	47.5	72	3.46	68	0
2008	57.2	91	69.3	84	45.1	101	3.12	77	0
2007	64.9	11	77.8	7	52	16	1.25	120	0
2006	59.6	66	70	78	49.3	48	3.72	63	0
2005	56.9	97	68.6	94	45.2	100	1.78	108	0
2004	60.6	56	71.2	67	50	42	8.21	3	0
2003	57.3	90	67.8	100	46.7	84	4.20	47	0
2002	54.8	114	65.5	116	44.1	112	3.02	82	0
2001	61.1	48	71.8	57	50.4	36	3.98	52	0
2000	61.5	40	72	53	51	27	6.62	9	0
1999	61.7	36	72.9	47	50.5	35	3.36	72	0
1998	64.2	16	75.4	24	53	12	3.57	66	0
1997	53.5	122	64.2	125	42.7	120	5.85	16	0
1996	55.5	110	64.8	121	46.1	89	11.75	1	0
1995	57.9	86	68.4	96	47.3	75	6.30	12	0
1994	59.8	63	73.5	41	46	92	1.41	115	0
1993	60.8	52	72.5	50	49	53	3.05	80	0
1992	59.2	72	73.2	44	45.3	99	0.48	126	0
1991	65.5	7	76	18	55	3	2.72	89	0
1990	55.7	107	65.8	114	45.6	96	5.10	26	0
1989	58.2	82	70.3	76	46.1	89	2.93	85	0
1988	62.5	26	77.4	11	47.5	72	1.29	117	0
1987	63.9	19	76.5	15	51.3	23	3.73	62	0
1986	61.4	43	71.9	55	50.9	30	4.79	30	0
1985	62.2	30	75.5	22	48.8	57	3.43	69	0
1984	55.4	111	67.1	104	43.7	116	3.95	54	0
1983	54.7	115	65.5	116	43.9	114	4.99	27	0
1982	65.5	7	76.6	13	54.3	5	4.56	40	0
1981	56.3	102	68.8	90	43.8	115	1.84	105	0
1980	60.5	58	73.8	39	47.3	75	2.37	96	0
1979	58.6	79	71.4	64	45.9	93	1.45	112	0
1978	58.9	75	70.1	77	47.6	69	3.84	57	0
1977	68.2	2	81	2	55.4	2	5.47	23	0
1976	55.3	113	67.2	102	43.4	117	2.38	95	0
1975	62.4	27	74.2	34	50.6	33	3.03	81	0
1974	56.6	100	66	111	47.2	78	6.98	7	0
1973	55.8	106	65.4	118	46.2	88	6.98	7	0
1972	62.3	28	74.2	34	50.4	36	4.57	39	0
1971	56.9	97	69.4	83	44.5	108	1.83	106	0
1970	60.3	61	71.5	59	49.2	50	5.50	22	0
1969	59.4	70	70.9	69	47.9	65	5.75	18	0
1968	56.1	105	66.4	110	45.8	94	3.78	58	0
1967	52.9	123	64.6	123	41.1	123	2.48	93	0
1966	51.4	125	62.9	127	39.9	127	4.76	34	0
1965	61.9	32	73.5	41	50.3	39	5.66	21	0
1964	62.6	25	74.5	31	50.7	31	3.41	70	0
1963	57.6	89	68.7	92	46.5	86	1.89	104	0
1962	64.4	15	74.9	28	53.9	8	4.23	45	0
1961	56.3	102	68	99	44.6	104	1.44	114	0
1960	57.2	91	67	105	47.3	75	4.66	37	0
1959	64.2	16	75	27	53.4	9	2.61	91	0
1958	60.9	50	75.5	22	46.3	87	2.24	100	0
1957	57.7	88	68.3	97	47.1	80	4.23	45	0
1956	58.9	75	70.7	70	47.1	80	5.20	24	0
1955	61.8	35	74.6	30	48.9	54	2.76	88	0
1954	54.6	116	66	111	43.2	119	3.27	73	0
1953	59.7	65	71.5	59	47.9	65	2.91	86	0
1952	58.9	75	69.1	88	48.6	58	3.20	75	0
1951	61.3	46	72.5	50	50.2	40	3.76	59	0
1950	61.6	38	74.5	31	48.5	59	1.29	117	1
1949	62.8	23	75.9	19	49.7	45	1.53	110	1
1948	57.1	93	69.7	81	44.5	108	4.78	31	0
1947	55.6	109	66.7	107	44.6	104	3.74	60	0
1945	54.1	120	64.7	122	43.4	117	7.67	5	0
1944	64.9	11	75.6	21	54.1	6	5.20	24	0
1943	58	84	68.8	90	47.2	78	5.72	19	0
1942	59.5	68	71.5	59	47.6	69	4.68	35	0
1941	64.6	14	77.5	9	51.7	18	4.11	48	0
1940	57.1	93	68.7	92	45.5	97	4.04	50	0
1939	64.7	13	77.9	6	51.4	22	4.06	49	0
1938	60.4	59	71.9	55	48.9	54	4.36	43	0
1937	60.6	56	72.9	47	48.3	60	3.25	74	0
1936	66.3	4	79.5	4	53	12	1.06	123	0
1935	54.3	119	65.8	114	42.7	120	5.95	15	0
1934	68	3	84	1	51.9	17	0.68	124	0
1933	61.2	47	70.7	70	51.6	19	8.03	4	0
1932	61.7	36	75.4	24	48.1	61	2.23	101	0
1931	56.3	102	68.6	94	44	113	3.66	65	0
1930	61.4	43	73.7	40	49.1	51	1.79	107	0
1929	57	95	69.3	84	45	102	2.70	90	1
1928	61.9	32	76.2	17	47.6	69	1.22	121	0
1927	56.5	101	67.2	102	45.7	95	4.78	31	0
1926	61.4	43	75.7	20	47.1	80	2.31	99	0
1925	56.8	99	71.6	58	42	122	1.45	112	0
1924	53.7	121	66.6	109	40.8	125	1.47	111	0
1923	58.8	78	73	45	44.6	104	1.29	117	0
1922	65.8	6	78.2	5	53.4	9	3.68	64	0
1921	63.3	22	76.3	16	50.4	36	1.34	116	0
1919	55.7	107	66.8	106	44.6	104	3.74	60	0
1918	62.7	24	74.9	28	50.6	33	4.44	42	0
1917	52.8	124	65	120	41	124	4.47	41	1
1916	59.8	63	71.5	59	48	64	4.58	38	1
1915	54.6	116	65.1	119	44.2	110	7.02	6	0
1914	61.9	32	74	36	49.8	43	6.05	14	0
1913	58.3	81	69.9	79	46.6	85	5.70	20	1
1912	60.4	59	71	68	49.7	45	3.94	55	0
1911	65.4	9	76.6	13	54.1	6	2.98	83	0
1910	54.4	118	64.6	123	44.2	110	2.81	87	0
1909	57	95	66.7	107	47.4	74	4.78	31	0
1908	59.9	62	68.9	89	51	27	6.58	10	0
1907			63.1	126	40.6	126	2.96	84	6
1906	60.8	52	70.6	72	51	27	2.42	94	0
1905			69.2	87	49.8	43	6.13	13	4
1904	60.8	52	70.4	74	51.1	24	3.38	71	0
1903	63.7	20	74.4	33	53	12			0
1898	57.9	86	67.6	101	48.1	61	4.36	43	0
1897	58	84	69.9	79	46.1	89	1.12	122	0
1896	69	1	80.2	3	57.9	1	6.31	11	0
1895	62.3	28	73.9	37	50.7	31	3.54	67	0
1893	55.4	111	65.9	113	44.8	103	3.09	79	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1896	69
1977	68.2
1934	68
1936	66.3
2018	66
1922	65.8
1991	65.5
1982	65.5
1911	65.4
2012	65.1

Coldest
Year	Mean, °F
1966	51.4
1917	52.8
1967	52.9
1997	53.5
1924	53.7
1945	54.1
1935	54.3
1910	54.4
1954	54.6
1915	54.6

Wettest
Year	Precipitation, in
1996	11.75
2019	8.93
2004	8.21
1933	8.03
1945	7.67
1915	7.02
1974	6.98
1973	6.98
2000	6.62
1908	6.58

Driest
Year	Precipitation, in
1992	0.48
2026	0.52
1934	0.68
1936	1.06
1897	1.12
1928	1.22
2007	1.25
1988	1.29
1950	1.29
1923	1.29

The hottest, coldest and wettest days

Hottest day: 91°F; 27 May 2026
Coldest night: 27°F; 7 May 2026, 2 May 2026
Wettest day: 0.19 in; 24 May 2026

Every month, season and year

Months

Seasons

Years

Rockford, IL the day's answers

All-time records

Every answer in words

May 2026 brought 0.52 in of precipitation in Rockford, IL, the driest May since 1992, 2nd driest of 126.
The hottest day of May 2026 in Rockford, IL: 91°F on Wednesday 27 May 2026.
The coldest night of May 2026 in Rockford, IL: a low of 27°F on Thursday 7 May 2026 and Saturday 2 May 2026.
The wettest day of May 2026 in Rockford, IL: 0.19 in on Sunday 24 May 2026.