Peoria, IL: Summer

31 August 2026: Summer 2026 averaged 74.6°F in Peoria, IL (2 days missing), the warmest summer since 2025, tied 59th warmest of 144 (with 1938).

Summer 2026

Mean temperature: 74.6°F; Warmest since 2025; 59th warmest of 144
Precipitation: 16.84 in; Wettest since 2015; 9th wettest of 142

A normal summer in Peoria, IL (1991 to 2020): a mean temperature of 74°F, between 72.1°F and 76.2°F in eight years of ten and 9.98 in of precipitation, between 6.02 in and 16.12 in in eight years of ten.

The mean temperature of every summer in Peoria, IL since 1883: 74.6°F in 2026; the highest is 78.9°F, in 1936.

Normal range, 72.1 to 76.2°F

Every year, ranked, as a table

Every summer in Peoria, IL from 1883 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	74.6	59	83.5	94	65.8	17	16.84	9	2
2025	76.1	23	85.5	50	66.8	2	8.59	91	1
2024	75.5	35	85.3	56	65.7	19	10.44	72	0
2023	75.2	46	85.9	37	64.6	49	11.64	54	0
2022	75.4	39	85.6	47	65.3	28	7.74	103	0
2021	75.7	31	85	64	66.3	8	13.31	31	0
2020	75.3	43	86	35	64.7	46	11.28	60	0
2019	74.5	61	84.2	79	64.9	41	10.92	63	0
2018	75.5	35	85.1	61	66	13	13.95	23	0
2017	73.9	75	84.5	75	63.2	81	7.24	114	0
2016	76.1	23	85.5	50	66.7	3	15.90	13	0
2015	75	49	84.2	79	65.8	17	19.47	4	0
2014	74.1	68	83.1	106	65.1	33	18.10	8	0
2013	73.6	88	83.6	93	63.6	72	4.31	140	0
2012	76.4	18	88.2	11	64.7	46	7.47	108	0
2011	76.1	23	85.9	37	66.4	6	9.21	87	0
2010	76.4	18	85.6	47	67.1	1	13.51	28	0
2009	71.1	133	80	142	62.3	98	13.32	30	0
2008	73.7	84	83.7	90	63.7	68	9.74	81	0
2007	75	49	85.2	59	64.9	41	10.59	70	0
2006	74.9	53	84.8	66	65	36	7.56	106	0
2005	76.7	14	87.8	16	65.5	22	5.13	135	0
2004	70.2	141	79.5	143	61	123	11.85	49	0
2003	72.9	102	82.9	111	62.8	88	12.62	40	0
2002	76.2	21	85.9	37	66.4	6	10.99	61	0
2001	73.7	84	83.8	86	63.7	68	8.49	96	0
2000	72.8	104	82.4	121	63.3	78	6.62	121	0
1999	73.7	84	83.5	94	64	59	10.21	74	0
1998	73.9	75	82.8	113	65	36	12.09	48	0
1997	72.5	107	82.6	117	62.5	96	8.37	98	0
1996	72.2	114	82	125	62.3	98	7.68	104	0
1995	75.9	27	86.6	26	65.2	30	6.35	124	0
1994	73.5	89	84.8	66	62.2	101	6.10	127	0
1993	73.9	75	83.2	102	64.6	49	23.23	1	0
1992	70.2	141	81	134	59.5	142	9.24	86	0
1991	74.8	55	85.8	42	63.8	67	5.26	134	0
1990	71.9	122	81.2	132	62.6	93	22.48	2	0
1989	72.5	107	83.1	106	61.9	109	6.36	123	0
1988	76.8	10	89.7	4	63.9	64	3.04	142	0
1987	75.6	34	86.3	29	64.8	45	10.19	75	0
1986	72.9	102	83.3	99	62.5	96	15.27	15	0
1985	70.8	138	80.9	136	60.8	131	12.24	43	0
1984	74	72	84.7	72	63.3	78	8.70	90	0
1983	77.9	4	89.1	6	66.7	3	7.56	106	0
1982	71.4	128	81.2	132	61.6	116	14.65	18	0
1981	73.8	80	82.8	113	64.7	46	18.91	5	0
1980	74.9	53	85.4	53	64.5	52	16.53	11	0
1979	72.2	114	83.2	102	61.2	121	7.45	109	0
1978	73.2	93	83.8	86	62.6	93	6.71	119	0
1977	73.3	91	84.3	77	62.2	101	12.77	37	0
1976	72	120	83.8	86	60.3	139	8.20	99	0
1975	73.5	89	83.7	90	63.3	78	13.78	25	0
1974	71.9	122	82.8	113	61.1	122	15.13	17	0
1973	73.8	80	83.9	85	63.7	68	13.40	29	0
1972	71.2	130	81.7	127	60.8	131	13.77	26	0
1971	73.1	96	85	64	61.3	120	8.38	97	0
1970	72.3	113	82.5	119	62.2	101	12.59	41	0
1969	71.7	126	81.7	127	61.8	111	13.30	32	0
1968	73.1	96	83.1	106	63	85	12.19	45	0
1967	70.8	138	81	134	60.5	138	10.11	77	0
1966	73	100	84.6	74	61.4	118	8.51	95	0
1965	72	120	82.4	121	61.7	114	12.96	35	0
1964	73.8	80	85.3	56	62.2	101	7.87	101	0
1963	72.5	107	84.1	81	60.9	127	8.08	100	0
1962	72.2	114	83.4	97	61	123	6.68	120	0
1961	71.7	126	82.5	119	60.9	127	10.89	64	0
1960	71.2	130	80.9	136	61.4	118	14.25	21	0
1959	75.5	35	85.8	42	65.2	30	6.11	126	0
1958	71.1	133	80.4	140	61.8	111	16.63	10	0
1957	74.8	55	84.8	66	64.9	41	6.61	122	0
1956	74	72	84	84	63.9	64	10.12	76	0
1955	75.8	30	86.2	32	65.4	25	8.57	92	0
1954	75.7	31	85.8	42	65.6	21	18.73	6	0
1953	75.9	27	86.9	23	65	36	11.40	57	0
1952	75.4	39	85.9	37	64.9	41	12.85	36	0
1951	71.3	129	80.8	138	61.8	111	13.15	34	0
1950	70.4	140	80.7	139	60.1	141	11.70	52	0
1949	75.9	27	86.3	29	65.5	22	9.46	84	0
1948	73.3	91	83.8	86	62.7	90	12.24	43	0
1947	74.2	65	84.8	66	63.6	72	10.10	78	0
1946	72.2	114	82.7	116	61.7	114	11.60	55	0
1945	71	137	81.4	130	60.6	136	7.34	111	0
1944	74.3	63	85.5	50	63.1	83	7.31	112	0
1943	75	49	85.1	61	65	36	10.68	69	0
1942	73.1	96	83.3	99	62.8	88	12.40	42	0
1941	75.5	35	86.7	24	64.4	53	7.12	115	0
1940	75.3	43	86.5	28	64.1	57	7.09	118	0
1939	74.2	65	84.7	72	63.6	72	12.71	38	0
1938	74.6	59	85.2	59	64	59	16.11	12	0
1937	75	49	85.8	42	64.2	55	8.74	89	0
1936	78.9	1	92.6	1	65.2	30	3.96	141	0
1935	73.9	75	84.1	81	63.6	72	10.24	73	0
1934	78.2	3	90.3	2	66.2	9	10.56	71	0
1933	76.8	10	89	7	64.6	49	5.74	129	0
1932	74.8	55	86	35	63.5	77	11.30	59	0
1931	76.2	21	87.5	19	65	36	10.69	68	1
1930	75.3	43	87.5	19	63.2	81	5.11	136	0
1929	71.9	122	82.3	123	61.5	117	13.22	33	0
1928	72.2	114	82.3	123	62	108	14.57	19	0
1927	69.8	143	80.4	140	59.3	143	12.10	47	0
1926	72.5	107	82.9	111	62.1	105	18.36	7	0
1925	74.1	68	85.1	61	63	85	11.35	58	0
1924	71.1	133	81.3	131	60.9	127	20.82	3	1
1923	74.7	58	85.9	37	63.6	72	6.28	125	0
1922	74.1	68	85.7	46	62.6	93	4.77	137	0
1921	76.8	10	87.5	19	66	13	9.98	79	0
1920	72.6	105	84.3	77	60.8	131	5.61	131	0
1919	75.1	48	86.1	34	64	59	11.78	50	0
1918	74	72	84.8	66	63.1	83	14.03	22	0
1917	71.2	130	81.9	126	60.6	136	12.71	38	0
1916	74.3	63	85.6	47	63	85	9.72	82	0
1915	69	144	79	144	58.9	144	13.77	26	0
1914	76.1	23	88.2	11	64	59	5.67	130	0
1913	76.5	16	88.8	9	64.3	54	5.83	128	0
1912	71.9	122	83	109	60.8	131	8.57	92	0
1911	74.1	68	86.2	32	62.1	105	10.95	62	0
1910	72.5	107	84.8	66	60.3	139	4.69	139	0
1909	73.2	93	84.4	76	62.1	105	8.92	88	0
1908	72.1	119	83.2	102	61	123	10.81	65	0
1907	71.1	133	81.5	129	60.7	135	15.48	14	0
1906	72.5	107	84.1	81	60.9	127	7.31	112	0
1905	72.6	105	83.3	99	61.9	109	10.73	66	0
1904	73.9	75	86.7	24	61	123	12.15	46	0
1903	73.1	96	83.5	94	62.7	90	14.52	20	0
1902	73.7	84	83.2	102	64.1	57			0
1901	77.7	5	89.6	5	65.9	15	9.58	83	0
1900	76.9	9	88.1	14	65.7	19	9.28	85	0
1899	76.4	18	88.5	10	64.2	55	5.56	132	0
1898	75.2	46	86.3	29	64	59	7.10	116	0
1897	74.5	61	86.6	26	62.3	98	7.78	102	0
1896	76.5	16	87.8	16	65.1	33	13.94	24	0
1895	76.6	15	87.8	16	65.5	22			0
1894	77.1	6	89	7	65.1	33	7.68	104	0
1893	77.1	6	88.1	14	66.2	9	4.74	138	0
1892	75.7	31	85.3	56	66.1	12	9.86	80	0
1891	73.2	93	82.6	117	63.7	68	11.76	51	0
1890	76.8	10	87.5	19	66.2	9	5.53	133	0
1889	73.8	80	83.7	90	63.9	64	15.17	16	0
1888	75.4	39	85.4	53	65.4	25	10.70	67	0
1887	78.4	2	90.1	3	66.6	5	7.10	116	0
1886	77	8	88.2	11	65.9	15	7.44	110	0
1885	75.4	39	85.4	53	65.4	25	11.44	56	0
1884	74.2	65	83	109	65.3	28	11.67	53	0
1883	73	100	83.4	97	62.7	90	8.53	94	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1936	78.9
1887	78.4
1934	78.2
1983	77.9
1901	77.7
1894	77.1
1893	77.1
1886	77
1900	76.9
1988	76.8
More years share the last value

Coldest
Year	Mean, °F
1915	69
1927	69.8
2004	70.2
1992	70.2
1950	70.4
1985	70.8
1967	70.8
1945	71
2009	71.1
1958	71.1
More years share the last value

Wettest
Year	Precipitation, in
1993	23.23
1990	22.48
1924	20.82
2015	19.47
1981	18.91
1954	18.73
1926	18.36
2014	18.10
2026	16.84
1958	16.63

Driest
Year	Precipitation, in
1988	3.04
1936	3.96
2013	4.31
1910	4.69
1893	4.74
1922	4.77
1930	5.11
2005	5.13
1991	5.26
1890	5.53

The hottest, coldest and wettest days

Hottest day: 95°F; 27 July 2026
Coldest night: 51°F; 15 June 2026
Wettest day: 2.24 in; 17 June 2026

Every month, season and year

Months

Seasons

Years

Peoria, IL the day's answers

All-time records

Every answer in words

Summer 2026 brought 16.84 in of precipitation in Peoria, IL, the wettest summer since 2015, 9th wettest of 142.
The hottest day of summer 2026 in Peoria, IL: 95°F on Monday 27 July 2026.
The coldest night of summer 2026 in Peoria, IL: a low of 51°F on Monday 15 June 2026.
The wettest day of summer 2026 in Peoria, IL: 2.24 in on Wednesday 17 June 2026.