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Belleville May Weather

Averages and records for weather in Belleville, Illinois in the month of May.

Typical Belleville May Weather 1991–2020
Average daily high	78.7 °F
Average daily low	56.4 °F
Average monthly precipitation	5.0 inches
Average monthly snow	none
Daily chance of precipitation	37.2%
Daily chance of snow	0%

Belleville May Weather Records 1948–2024
Highest temperature	97 °F	May 26, 1953
Lowest temperature	28 °F	May 4, 1976
Highest daily low	88 °F	May 19, 1996
Lowest daily high	50 °F	May 4, 2017
Hottest average high temperature	86.6 °F	2018
Coldest average high temperature	68.3 °F	1961
Most daily precipitation	4.6 inches	May 17, 1995
Most monthly precipitation	17.0 inches	1995
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
May 1	74.5	51.3	90	33
May 2	74.6	51.7	90	30
May 3	74.8	51.9	90	30
May 4	75.0	52.2	90	28
May 5	75.2	52.4	93	34
May 6	75.5	52.7	91	33
May 7	75.7	53.1	90	33
May 8	76.0	53.4	90	34
May 9	76.4	53.7	88	32
May 10	76.7	54.0	90	29
May 11	77.0	54.4	90	35
May 12	77.4	54.8	91	33
May 13	77.8	55.3	90	37
May 14	78.1	55.7	93	37
May 15	78.4	56.0	93	39
May 16	78.7	56.4	93	34
May 17	79.1	56.7	93	36
May 18	79.4	57.1	91	36
May 19	79.9	57.5	93	41
May 20	80.0	57.8	93	39
May 21	80.2	58.1	93	39
May 22	80.4	58.3	92	38
May 23	80.5	58.4	92	39
May 24	80.8	58.6	94	43
May 25	81.0	58.9	94	39
May 26	81.3	59.1	97	38
May 27	81.6	59.5	94	39
May 28	82.0	59.9	95	41
May 29	82.4	60.3	95	39
May 30	82.7	60.6	93	41
May 31	83.0	60.9	92	40

Weather Station Details

Years	Station	Coordinates
1948–2024	Belleville SIU Research	location