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Charleston July Weather

Averages and records for weather in Charleston, Illinois in the month of July.

Typical Charleston July Weather 1991–2020
Average daily high	86.9 °F
Average daily low	66.3 °F
Average monthly precipitation	4.3 inches
Average monthly snow	none
Daily chance of precipitation	29.5%
Daily chance of snow	0%

Charleston July Weather Records 1896–2024
Highest temperature	110 °F	July 15, 1936
Lowest temperature	45 °F	July 23, 1947
Highest daily low	82 °F	July 20, 2018
Lowest daily high	64 °F	July 13, 1990
Hottest average high temperature	99.0 °F	1936
Coldest average high temperature	81.2 °F	1971
Most daily precipitation	5.2 inches	July 21, 1973
Most monthly precipitation	10.1 inches	1987
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
July 1	86.8	65.6	102	45
July 2	86.9	65.7	103	46
July 3	87.0	65.8	105	48
July 4	87.1	65.9	104	48
July 5	87.2	66.0	105	50
July 6	87.2	66.2	107	49
July 7	87.2	66.3	108	51
July 8	87.3	66.3	107	51
July 9	87.3	66.4	102	50
July 10	87.3	66.4	108	48
July 11	87.4	66.3	107	50
July 12	87.4	66.4	109	49
July 13	87.4	66.4	106	49
July 14	87.4	66.4	110	47
July 15	87.4	66.5	110	50
July 16	87.4	66.4	101	52
July 17	87.4	66.4	103	50
July 18	87.4	66.4	102	51
July 19	87.4	66.3	107	51
July 20	87.4	66.3	104	50
July 21	87.4	66.3	104	49
July 22	87.2	66.2	106	47
July 23	87.1	66.1	107	45
July 24	87.0	66.0	107	49
July 25	87.0	66.0	105	49
July 26	87.0	66.0	105	48
July 27	87.1	66.0	105	50
July 28	87.0	65.9	108	49
July 29	86.9	65.9	102	50
July 30	86.8	65.8	103	50
July 31	86.7	65.7	103	50

Weather Station Details

Years	Station	Coordinates
1896–2024	Charleston	location