Chicago, IL: Summer

31 August 2026: Summer 2026 averaged 73.9°F in Chicago, IL, the warmest summer since 2025, 28th warmest of 154.

Summer 2026

Mean temperature: 73.9°F; Warmest since 2025; 28th warmest of 154
Precipitation: 15.38 in; Wettest since 2018; 17th wettest of 156

A normal summer in Chicago, IL (1991 to 2020): a mean temperature of 72.6°F, between 70°F and 75.3°F in eight years of ten and 11.44 in of precipitation, between 7.64 in and 17.31 in in eight years of ten.

The mean temperature of every summer in Chicago, IL since 1873: 73.9°F in 2026; the highest is 76.7°F, in 2020.

Normal range, 70 to 75.3°F

Every year, ranked, as a table

Every summer in Chicago, IL from 1871 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	73.9	28	82.2	47	65.6	22	15.38	17	0
2025	75	14	83.9	20	66.1	12	12.95	40	0
2024	74.6	19	83.7	22	65.5	26	11.59	64	0
2023	73.6	36	83	34	64.2	55	11.30	67	0
2022	74	26	83	34	64.9	38	9.21	104	0
2021	75.3	8	84.1	19	66.5	5	13.19	34	0
2020	76.7	1	86.3	4	67.1	3	7.75	128	0
2019	72.6	58	81.7	55	63.6	72	10.62	79	0
2018	74.7	17	83.5	26	65.9	16	15.38	17	0
2017	72.8	52	82.6	42	63.1	85	13.63	31	0
2016	74.3	23	83.6	25	65.1	36	13.34	33	0
2015	70.5	112	80	87	61.1	127	12.13	51	0
2014	71.7	84	81	65	62.4	101	17.25	9	0
2013	71.6	87	80.9	67	62.3	102	10.14	88	0
2012	76.1	4	87	2	65.2	35	6.63	143	0
2011	74	26	83.5	26	64.5	47	19.08	4	0
2010	75.2	11	84.4	17	66.1	12	16.81	10	0
2009	69.2	134	78.2	117	60.1	143	12.97	39	0
2008	72.5	61	82.2	47	62.9	91	12.67	47	0
2007	73.3	45	82.8	38	63.8	65	15.85	12	0
2006	73.1	48	82.6	42	63.6	72	10.70	76	0
2005	74.7	17	85.2	10	64.1	58	5.18	154	0
2004	68.6	139	78.3	115	59	151	10.78	74	0
2003	70.5	112	80.8	72	60.2	141	10.15	87	0
2002	73.7	32	83.5	26	64	61	15.35	19	0
2001	71.8	83	81.5	57	62.1	106	17.82	7	0
2000	70.3	119	79.5	98	61	129	10.16	86	0
1999	73	49	82.7	41	63.4	79	10.98	72	0
1998	72.4	66	82.1	51	62.8	94	11.53	65	0
1997	70.4	115	80.2	82	60.5	136	11.35	66	0
1996	70.1	123	80.1	83	60	144	10.20	85	0
1995	76.3	3	86.5	3	66.2	11	8.06	126	0
1994	70.7	104	81.3	59	60.2	141	11.76	59	0
1993	71.4	89	80.9	67	61.8	114	20.15	3	0
1992	67.1	151	77.7	123	56.5	154	8.68	116	0
1991	73.7	32	85.1	11	62.2	105	5.08	155	0
1990	71.1	98	80.8	72	61.3	124	14.50	24	0
1989	70.9	101	81.2	61	60.7	134	15.21	20	0
1988	75.1	12	87.3	1	63	89	7.08	135	0
1987	73.6	36	84.3	18	62.9	91	23.48	1	0
1986	69.9	125	80.5	77	59.3	149	8.94	112	0
1985	68.1	143	79.3	100	56.8	153	9.62	95	0
1984	71.1	98	83.1	33	59.1	150	7.31	132	0
1983	74.6	19	85.8	7	63.4	79	10.44	81	0
1982	68.4	141	79.2	103	57.5	152	13.82	28	0
1981	71.2	96	81.2	61	61.1	127	15.56	14	0
1980	72.3	68	82.8	38	61.8	114	15.52	16	0
1979	71.3	90	79.8	90	62.8	94	15.53	15	0
1978	71.7	84	81.1	64	62.3	102	11.76	59	0
1977	73.4	44	82.8	38	63.9	63	16.22	11	0
1976	72.7	54	82.6	42	62.7	98	10.41	82	0
1975	74.8	15	83.8	21	65.9	16	11.67	61	0
1974	71.3	90	80.8	72	61.9	110	11.11	69	0
1973	75.3	8	84.6	15	65.9	16	7.52	130	0
1972	71.3	90	80.4	79	62.3	102	11.82	56	0
1971	73.6	36	83.7	22	63.5	76	9.14	106	0
1970	74.1	25	83.4	30	64.8	40	13.14	36	0
1969	72	78	81.2	61	62.8	94	14.46	25	0
1968	73.7	32	83.3	31	64.2	55	9.01	110	0
1967	70.4	115	79.1	105	61.6	121	13.18	35	0
1966	73.8	29	83.3	31	64.4	50	9.58	97	0
1965	70.6	108	80.1	83	61.2	125	14.29	26	0
1964	73.5	42	83.7	22	63.3	81	8.96	111	0
1963	73.6	36	83.5	26	63.7	69	11.85	55	0
1962	72.6	58	81.7	55	63.5	76	8.06	126	0
1961	72.7	54	82.2	47	63.1	85	12.76	44	0
1960	72.5	61	81.8	54	63.3	81	8.37	122	0
1959	75.5	6	84.8	12	66.1	12	12.34	50	0
1958	70.7	104	79.7	94	61.8	114	13.68	29	0
1957	73.7	32	82.6	42	64.8	40	20.28	2	0
1956	73.6	36	83	34	64.2	55	7.45	131	0
1955	76.4	2	86.3	4	66.5	5	11.23	68	0
1954	75.1	12	84.8	12	65.3	31	14.76	22	0
1953	75.3	8	85.9	6	64.6	45	9.79	92	0
1952	74.8	15	85.3	9	64.3	53	9.59	96	0
1951	69.8	127	79.7	94	59.9	145	11.87	54	0
1950	70.4	115	81	65	59.9	145	17.45	8	0
1949	75.5	6	85.5	8	65.6	22	8.55	119	0
1948	72.1	73	82.1	51	62	107	8.89	114	0
1947	72.5	61	83	34	62	107	11.66	62	0
1946	71	100	81.5	57	60.4	138	9.64	94	0
1945	69.8	127	80.1	83	59.5	148	9.68	93	0
1944	73.8	29	84.7	14	62.8	94	7.00	137	0
1943	74.3	23	84.6	15	64.1	58	11.81	58	0
1942	71.9	79	80.9	67	62.9	91	9.49	98	0
1941	72.3	68	80	87	64.6	45	6.69	142	0
1940	71.3	90	79.3	100	63.2	84	6.55	144	0
1939	72.5	61	80.3	81	64.7	44	9.34	101	0
1938	72.2	70	79.6	96	64.8	40	12.80	42	0
1937	72.1	73	79.8	90	64.3	53	9.11	108	0
1936	72.2	70	80.4	79	64	61	5.54	153	0
1935	71.9	79	79.2	103	64.5	47	11.64	63	0
1934	73.6	36	82.3	46	64.9	38	6.07	146	0
1933	74.4	21	82.2	47	66.6	4	7.28	134	0
1932	73	49	80.9	67	65.1	36	12.54	48	0
1931	73.8	29	81.3	59	66.3	9	13.13	37	0
1930	72.6	58	80.8	72	64.4	50	6.29	145	0
1929	69.6	130	77.3	130	61.9	110	10.63	78	0
1928	69.4	132	76.9	134	61.9	110	14.95	21	0
1927	67.8	145	75	144	60.5	136	8.66	118	0
1926	68.9	135	76.2	138	61.7	119	11.82	56	0
1925	72.8	52	80.1	83	65.5	26	9.09	109	0
1924	68.6	139	75.4	142	61.8	114	18.38	6	0
1923	72.1	73	78.7	110	65.4	30	12.13	51	0
1922	72.4	66	78.9	107	66	15	5.57	152	0
1921	75.9	5	82.1	51	69.7	1	8.36	123	0
1920	70.6	108	77.5	128	63.6	72	8.71	115	0
1919	74.4	21	80.9	67	67.8	2	5.85	148	0
1918	71.3	90	78.3	115	64.4	50	5.62	151	0
1917	68.8	138	76.1	140	61.5	123	6.79	140	0
1916	72.9	51	79.5	98	66.4	7	10.52	80	0
1915	66.9	153	72.9	154	60.8	131	13.50	32	0
1914	73.2	47	80	87	66.3	9	9.40	100	0
1913	73.3	45	80.8	72	65.8	19	8.44	120	0
1912	70	124	76.9	134	63.1	85	9.23	103	0
1911	73.5	42	80.5	77	66.4	7	8.91	113	0
1910	72.5	61	79.3	100	65.8	19	5.78	150	0
1909	71.3	90	77.8	122	64.8	40	13.06	38	0
1908	72.1	73	78.6	112	65.5	26	9.28	102	0
1907	70.3	119	76.8	136	63.7	69	11.01	71	0
1906	71.7	84	77.9	118	65.6	22	8.14	125	0
1905	70.2	122	77.2	131	63.3	81	12.75	45	0
1904	67.8	145	74.7	147	60.9	130	7.31	132	0
1903	67.3	149	73.3	153	61.2	125	9.89	91	0
1902	68.4	141	74.9	145	61.9	110	13.67	30	0
1901	72.7	54	79.8	90	65.6	22	8.68	116	0
1900	70.6	108	77.4	129	63.8	65	10.94	73	0
1899	71.9	79	78.6	112	65.3	31	10.28	83	0
1898	71.2	96	77.9	118	64.5	47	10.27	84	0
1897	69.5	131	75.9	141	63	89	6.78	141	0
1896	70.6	108	77.6	125	63.6	72	9.93	90	0
1895	70.9	101	77.9	118	63.9	63	10.70	76	0
1894	71.9	79	79.6	96	64.1	58	3.16	156	0
1893	70.5	112	77.2	131	63.8	65	6.85	139	0
1892	68.9	135	75.3	143	62.6	100	14.66	23	0
1891	67.2	150	73.7	151	60.8	131	9.41	99	0
1890	69.9	125	76.7	137	63.1	85	8.40	121	0
1889	67.7	147	74.6	149	60.8	131	12.88	41	0
1888	69.8	127	77.7	123	61.8	114	7.69	129	0
1887	70.4	115	78.9	107	62	107	6.03	147	0
1886	70.3	119	77.1	133	63.5	76	5.85	148	0
1885	68.9	135	76.2	138	61.7	119	18.92	5	0
1884	67.1	151	73.8	150	60.3	140	8.32	124	0
1883	67.7	147	74.8	146	60.6	135	12.35	49	0
1882	68.1	143	74.7	147	61.6	121	14.10	27	0
1881	70.7	104	77.6	125	63.7	69	10.78	74	0
1880	72.2	70	79.1	105	65.3	31	11.04	70	0
1879	70.7	104	77.6	125	63.8	65	9.21	104	0
1878	71.6	87	77.9	118	65.3	31	12.77	43	0
1877	70.8	103	78.9	107	62.7	98	12.08	53	0
1876	72.1	73	78.7	110	65.5	26	12.73	46	0
1875	66.7	154	73.7	151	59.7	147	15.64	13	0
1874	72.7	54	79.8	90	65.7	21	6.98	138	0
1873	69.4	132	78.5	114	60.4	138	7.06	136	0
1872							9.13	107	11
1871							10.09	89	92

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2020	76.7
1955	76.4
1995	76.3
2012	76.1
1921	75.9
1959	75.5
1949	75.5
2021	75.3
1973	75.3
1953	75.3

Coldest
Year	Mean, °F
1875	66.7
1915	66.9
1992	67.1
1884	67.1
1891	67.2
1903	67.3
1889	67.7
1883	67.7
1927	67.8
1904	67.8

Wettest
Year	Precipitation, in
1987	23.48
1957	20.28
1993	20.15
2011	19.08
1885	18.92
1924	18.38
2001	17.82
1950	17.45
2014	17.25
2010	16.81

Driest
Year	Precipitation, in
1894	3.16
1991	5.08
2005	5.18
1936	5.54
1922	5.57
1918	5.62
1910	5.78
1919	5.85
1886	5.85
1887	6.03

The hottest, coldest and wettest days

Hottest day: 96°F; 14 July 2026
Coldest night: 50°F; 2 June 2026
Wettest day: 1.85 in; 1 August 2026

Every month, season and year

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Chicago, IL the day's answers

All-time records

Every answer in words

Summer 2026 brought 15.38 in of precipitation in Chicago, IL, the wettest summer since 2018, tied 17th wettest of 156 (with 2018).
The hottest day of summer 2026 in Chicago, IL: 96°F on Tuesday 14 July 2026.
The coldest night of summer 2026 in Chicago, IL: a low of 50°F on Tuesday 2 June 2026.
The wettest day of summer 2026 in Chicago, IL: 1.85 in on Saturday 1 August 2026.