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Peoria August Weather

Averages and records for weather in Peoria, Illinois in the month of August.

Typical Peoria August Weather 1991–2020
Average daily high	84.0 °F
Average daily low	64.2 °F
Average monthly precipitation	3.3 inches
Average monthly snow	none
Daily chance of precipitation	27.2%
Daily chance of snow	0%

Peoria August Weather Records 1905–2024
Highest temperature	106 °F	August 18, 1936
Lowest temperature	41 °F	August 28, 1986
Highest daily low	82 °F	August 22, 1936
Lowest daily high	61 °F	August 25, 1987
Hottest average high temperature	93.4 °F	1947
Coldest average high temperature	76.7 °F	1915
Most daily precipitation	4.3 inches	August 29, 1955
Most monthly precipitation	8.6 inches	1965
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
August 1	84.9	65.4	101	52
August 2	84.8	65.2	101	51
August 3	84.6	65.1	103	48
August 4	84.5	65.0	102	44
August 5	84.4	64.9	104	51
August 6	84.3	64.7	100	50
August 7	84.2	64.6	98	50
August 8	84.2	64.6	101	48
August 9	84.2	64.5	104	47
August 10	84.2	64.4	97	49
August 11	84.1	64.4	101	49
August 12	84.1	64.4	99	47
August 13	84.2	64.4	104	49
August 14	84.2	64.4	99	47
August 15	84.1	64.3	102	45
August 16	84.0	64.3	102	51
August 17	83.8	64.1	103	52
August 18	83.7	64.0	106	45
August 19	83.7	63.9	100	51
August 20	83.7	63.8	102	43
August 21	83.6	63.7	99	45
August 22	83.6	63.5	102	46
August 23	83.5	63.4	101	50
August 24	83.3	63.2	102	43
August 25	83.1	63.0	99	46
August 26	83.0	62.8	98	41
August 27	82.9	62.6	96	43
August 28	82.8	62.4	96	41
August 29	82.7	62.2	96	43
August 30	82.5	62.1	99	44
August 31	82.3	61.8	96	41

Weather Station Details

Years	Station	Coordinates
1943–2024	Greater Peoria Airport	location
1905–1943	Peoria City Office	location