Peoria, IL: August

31 August 2026: August 2026 averaged 74.7°F in Peoria, IL, the warmest August since 2023, tied 50th warmest of 144 (with 2006, 1975 and 1928).

August 2026

Mean temperature: 74.7°F; Warmest since 2023; 50th warmest of 144
Precipitation: 6.63 in; Wettest since 2016; 11th wettest of 144

A normal August in Peoria, IL (1991 to 2020): a mean temperature of 74.7°F, between 71°F and 76.5°F in eight years of ten and 3.17 in of precipitation, between 0.88 in and 6.18 in in eight years of ten.

The mean temperature of every August in Peoria, IL since 1883: 74.7°F in 2026; the highest is 82°F, in 1947.

Normal range, 71 to 76.5°F

Every year, ranked, as a table

Every August 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
2026	74.7	50	83.2	98	66.1	22	6.63	11
2025	73.9	71	84	79	63.9	57	1.05	124
2024	74.6	54	84.5	66	64.7	41	3.86	45
2023	75.1	41	84.5	66	65.7	25	5.98	17
2022	75.4	36	85.2	55	65.5	31	3.45	52
2021	76.6	21	86.2	36	67	14	3.87	44
2020	73.8	76	84.6	63	62.9	82	0.59	140
2019	73.5	83	83	103	63.9	57	3.84	47
2018	75.5	34	84.9	59	66.2	20	6.08	15
2017	71.6	122	81.9	120	61.4	117	0.99	128
2016	76.4	22	85	57	67.7	9	7.45	3
2015	74.5	57	84.5	66	64.5	46	2.03	97
2014	75.8	30	84	79	67.5	10	6.94	9
2013	74.8	46	85.6	42	63.9	57	0.33	143
2012	73.7	79	85.8	39	61.7	110	3.76	48
2011	75.6	32	86.4	32	64.8	40	1.51	113
2010	76.9	17	86.7	28	67.1	12	2.51	78
2009	70.5	132	78.9	141	62	104	4.65	32
2008	73	95	83.3	96	62.7	87	1.04	125
2007	78.3	8	87.8	17	68.7	5	4.12	41
2006	74.7	50	83.2	98	66.2	20	3.53	51
2005	76	26	86.4	32	65.7	25	1.87	100
2004	68.1	142	78.1	143	58.2	139	4.92	26
2003	75.6	32	85.7	41	65.5	31	2.44	81
2002	75.2	39	84.5	66	66	23	4.57	34
2001	74.6	54	84.6	63	64.6	44	4.24	38
2000	75.9	28	86.1	37	65.6	28	0.91	130
1999	71.1	130	80.8	132	61.5	116	2.78	72
1998	75.1	41	84	79	66.3	19	5.26	25
1997	71.5	124	80.8	132	62.2	97	6.10	14
1996	73.3	86	83.1	100	63.6	67	1.03	126
1995	79.4	5	89.3	9	69.5	2	1.95	98
1994	71.5	124	82.5	114	60.6	122	2.92	66
1993	75	44	84.4	74	65.6	28	7.38	5
1992	68.5	140	79.5	137	57.6	142	0.25	144
1991	74.3	64	85.3	50	63.3	75	3.41	53
1990	72.1	114	81.5	125	62.7	87	5.31	24
1989	72.4	106	82.8	108	61.9	105	2.86	68
1988	78.5	7	90.4	5	66.5	17	2.11	94
1987	73.7	79	83.8	88	63.5	68	4.02	42
1986	68.9	139	80.1	135	57.7	141	1.74	103
1985	70.2	135	79.7	136	60.6	122	3.70	49
1984	74.8	46	86.3	34	63.4	73	0.78	136
1983	80.8	2	92.1	3	69.4	3	1.09	123
1982	71.2	128	80.9	130	61.6	114	3.97	43
1981	72.8	98	81.8	123	63.8	63	5.61	21
1980	76.9	17	86.7	28	67.1	12	6.16	13
1979	72.5	104	83.1	100	61.9	105	0.87	132
1978	73.2	91	84.3	76	62.1	101	1.28	118
1977	71.4	127	80.6	134	62.1	101	7.28	6
1976	70.3	134	81.5	125	59	137	2.30	87
1975	74.7	50	83.6	90	65.7	25	5.62	20
1974	72.1	114	82.7	110	61.6	114	0.81	133
1973	74.6	54	84.4	74	64.9	39	0.90	131
1972	72.3	108	81.9	120	62.8	86	4.26	37
1971	71.6	122	83	103	60.2	128	2.19	93
1970	72.3	108	81.7	124	62.9	82	3.21	61
1969	73.1	93	83.5	93	62.6	90	2.82	71
1968	73.7	79	83.3	96	64.2	51	1.71	105
1967	68.1	142	78.2	142	57.9	140	2.34	86
1966	70.2	135	81.3	128	59.2	136	2.56	77
1965	71.2	128	81.1	129	61.3	118	8.61	1
1964	72.4	106	84.6	63	60.2	128	2.06	96
1963	70.4	133	80.9	130	59.8	132	2.99	65
1962	73.6	82	85.4	47	61.7	110	1.80	102
1961	72.3	108	82.5	114	62.1	101	1.94	99
1960	73.3	86	82.7	110	64	55	5.32	23
1959	77.8	10	87.5	20	68.1	7	2.25	91
1958	73.9	71	83.9	83	63.9	57	3.35	56
1957	75.2	39	86	38	64.4	48	1.57	110
1956	74.1	67	84.1	78	64	55	4.47	35
1955	77.7	12	89	11	66.5	17	4.72	30
1954	73.8	76	83.1	100	64.5	46	8.56	2
1953	75.1	41	86.5	30	63.7	66	1.61	108
1952	72.6	101	83	103	62.2	97	4.73	28
1951	71.7	121	81.5	125	61.8	107	3.30	57
1950	69	138	79.2	140	58.8	138	1.67	106
1949	74.5	57	85.5	44	63.5	68	1.28	118
1948	74.3	64	85.6	42	63	79	0.81	133
1947	82	1	93.5	1	70.5	1	1.33	116
1946	69.9	137	79.5	137	60.3	127	3.40	54
1945	74	70	85.3	50	62.6	90	1.11	122
1944	73.9	71	84.5	66	63.2	76	2.86	68
1943	75.7	31	85.8	39	65.5	31	4.63	33
1942	72.6	101	83.5	93	61.8	107	2.24	92
1941	76.2	24	87.2	23	65.1	38	2.07	95
1940	74.8	46	85	57	64.6	44	3.29	59
1939	73.3	86	84.8	61	61.7	110	2.38	84
1938	77.2	15	87.6	19	66.9	15	3.01	64
1937	78.3	8	89.3	9	67.3	11	1.55	112
1936	80.3	4	92.8	2	67.8	8	2.27	89
1935	74.8	46	85.3	50	64.3	49	0.98	129
1934	74.5	57	85.4	47	63.5	68	2.30	87
1933	73.1	93	84.3	76	61.8	107	2.66	75
1932	74.1	67	85.3	50	63	79	3.14	62
1931	73.9	71	85.4	47	62.5	94	2.49	80
1930	76.1	25	88.1	15	64.1	54	1.56	111
1929	71.5	124	82.1	119	61	120	3.02	63
1928	74.7	50	85.3	50	64.2	51	3.62	50
1927	68.5	140	79.4	139	57.6	142	1.45	114
1926	74.4	62	83.5	93	65.2	36	6.79	10
1925	73.9	71	85.2	55	62.6	90	4.27	36
1924	72.7	99	82.9	107	62.5	94	7.15	8
1923	73.5	83	84.7	62	62.2	97	2.84	70
1922	74.5	57	86.5	30	62.5	94	0.72	138
1921	73.8	76	83.6	90	63.9	57	3.86	45
1920	72.2	112	83.9	83	60.4	126	1.87	100
1919	71.9	118	83	103	60.8	121	4.73	28
1918	77.5	14	88.2	13	66.8	16	5.88	18
1917	70.9	131	81.9	120	59.8	132	3.36	55
1916	75.9	28	87.2	23	64.7	41	6.03	16
1915	67.2	144	76.7	144	57.6	142	4.78	27
1914	75.4	36	87.8	17	63	79	2.40	82
1913	77.8	10	90.1	6	65.6	28	2.87	67
1912	72.5	104	82.7	110	62.2	97	1.67	106
1911	72	117	84	79	60.1	130	1.73	104
1910	72.3	108	84.5	66	60	131	0.68	139
1909	77	16	89.8	8	64.2	51	0.79	135
1908	72.6	101	84.5	66	60.6	122	2.78	72
1907	71.9	118	82.5	114	61.3	118	6.60	12
1906	75.5	34	87.1	25	63.8	63	1.59	109
1905	74.4	62	85.5	44	63.2	76	1.36	115
1904	72.1	114	84.9	59	59.3	134	4.13	39
1903	72.7	99	82.8	108	62.6	90	7.22	7
1902	73	95	82.5	114	63.5	68	7.42	4
1901	75	44	86.3	34	63.8	63	1.29	117
1900	80.5	3	91.7	4	69.3	4	5.39	22
1899	77.7	12	90.1	6	65.3	35	1.27	120
1898	73.5	83	83.9	83	63.1	78	3.26	60
1897	71.9	118	84.5	66	59.3	134	1.02	127
1896	76.7	19	88	16	65.4	34	4.69	31
1895	76.7	19	88.2	13	65.2	36	2.27	89
1894	75.3	38	87.1	25	63.5	68	2.50	79
1893	74.5	57	87.4	21	61.7	110	0.44	142
1892	76.4	22	86.8	27	66	23	0.73	137
1891	72.9	97	82.5	114	63.4	73	5.71	19
1890	73.3	86	83.8	88	62.7	87	2.39	83
1889	74.2	66	85.5	44	62.9	82	1.23	121
1888	73.2	91	83.6	90	62.9	82	2.38	84
1887	76	26	87.4	21	64.7	41	2.72	74
1886	78.9	6	89	11	68.7	5	3.30	57
1885	73.3	86	82.7	110	63.9	57	2.64	76
1884	74.1	67	83.9	83	64.3	49	4.13	39
1883	72.2	112	83.9	83	60.5	125	0.57	141

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1947	82
1983	80.8
1900	80.5
1936	80.3
1995	79.4
1886	78.9
1988	78.5
2007	78.3
1937	78.3
1959	77.8
More years share the last value

Coldest
Year	Mean, °F
1915	67.2
2004	68.1
1967	68.1
1992	68.5
1927	68.5
1986	68.9
1950	69
1946	69.9
1985	70.2
1966	70.2

Wettest
Year	Precipitation, in
1965	8.61
1954	8.56
2016	7.45
1902	7.42
1993	7.38
1977	7.28
1903	7.22
1924	7.15
2014	6.94
1926	6.79

Driest
Year	Precipitation, in
1992	0.25
2013	0.33
1893	0.44
1883	0.57
2020	0.59
1910	0.68
1922	0.72
1892	0.73
1984	0.78
1909	0.79

The hottest, coldest and wettest days

Hottest day: 94°F; 31 August 2026
Coldest night: 56°F; 24 August 2026
Wettest day: 2.01 in; 13 August 2026

Every month, season and year

Months

Seasons

Years

Peoria, IL the day's answers

All-time records

Every answer in words

August 2026 brought 6.63 in of precipitation in Peoria, IL, the wettest August since 2016, 11th wettest of 144.
The hottest day of August 2026 in Peoria, IL: 94°F on Monday 31 August 2026.
The coldest night of August 2026 in Peoria, IL: a low of 56°F on Monday 24 August 2026.
The wettest day of August 2026 in Peoria, IL: 2.01 in on Thursday 13 August 2026.