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Mt. Vernon July Weather

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

Typical Mt. Vernon July Weather 1991–2020
Average daily high	86.1 °F
Average daily low	67.1 °F
Average monthly precipitation	3.7 inches
Average monthly snow	none
Daily chance of precipitation	28.4%
Daily chance of snow	0%

Mt. Vernon July Weather Records 1895–2024
Highest temperature	114 °F	July 14, 1936
Lowest temperature	46 °F	July 23, 1947
Highest daily low	82 °F	July 15, 1936
Lowest daily high	63 °F	July 26, 2004
Hottest average high temperature	101.2 °F	1936
Coldest average high temperature	80.6 °F	2009
Most daily precipitation	4.4 inches	July 16, 1956
Most monthly precipitation	10.8 inches	1948
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	85.5	65.9	105	49
July 2	85.6	66.0	106	49
July 3	85.7	66.1	104	52
July 4	85.7	66.2	104	50
July 5	85.8	66.4	104	50
July 6	85.9	66.5	104	52
July 7	86.0	66.7	108	51
July 8	86.1	66.8	104	50
July 9	86.1	66.8	108	50
July 10	86.1	66.9	109	51
July 11	86.1	66.9	108	48
July 12	86.2	67.0	110	50
July 13	86.2	67.0	112	50
July 14	86.2	67.1	114	53
July 15	86.3	67.2	113	50
July 16	86.2	67.1	102	49
July 17	86.2	67.1	105	52
July 18	86.2	67.1	104	52
July 19	86.2	67.0	106	52
July 20	86.3	67.0	105	50
July 21	86.4	67.0	110	52
July 22	86.4	66.9	112	48
July 23	86.2	66.8	111	46
July 24	86.1	66.8	110	51
July 25	86.0	66.7	107	52
July 26	86.0	66.7	105	48
July 27	86.1	66.7	107	50
July 28	86.1	66.6	109	52
July 29	86.0	66.5	104	50
July 30	86.0	66.5	106	52
July 31	86.0	66.3	102	51

Weather Station Details

Years	Station	Coordinates
1895–2024	Mt Vernon 3 Ne	location