Weather Averages for Belleville, IL

Weather Averages for
Belleville, IL

Latitude: 38°33'N, Longitude: 89°51'W, Elevation: 443.0 ft, Distance: 7.86 mi

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 21 years	°F	53	32	33	41	53	64	73	77	75	68	57	42	33
Average high temperature over 21 years	°F	62	37	42	51	64	75	84	87	86	78	68	51	41
Average low temperature over 21 years	°F	44	23	26	32	44	53	64	68	64	57	46	33	28
Highest recorded temperature over 51 years	°F	109	75	80	87	93	96	104	109	104	102	95	84	75
Lowest recorded temperature over 51 years	°F	-18	-18	-11	-2	21	28	44	48	44	26	24	3	-7
Average number of rainy days over 51 years	days	105	8	8	11	11	10	9	8	7	7	8	9	9
Average precipitation over 21 years	in	37.1	2.2	2.5	3.1	3.8	4.1	3.7	3.6	3.2	3.4	2.6	2.6	2.5
Average dew point over 10 years	°F	44	21	24	33	42	53	62	68	64	57	44	36	26
Average number of days with thunderstorms over 40 years	days	51	1	1	3	6	7	8	8	7	4	3	2	1
Average number of days with fog over 40 years	days	168	13	13	14	11	14	12	16	18	16	14	13	14
Average morning relative humidity over 10 years	%	75.3	71.7	74.6	74	69.5	73	75	78.3	79.9	79.6	77.9	75.6	74.1
Average evening relative humidity over 10 years	%	54.9	57.4	59.4	55.7	49.4	51.6	52.5	54.8	53.7	51.9	52.5	58.6	61.4
Average wind speed over 12 years	mph	11.0	6.0	8.0	6.0	5.0	4.0	3.0	3.0	4.0	4.0	6.0	6.0	5.0
Average snowfall over 43 years	in	18.2	5.4	3.9	3.4	0.6	-	-	-	-	-	-	1.4	3.1
Most rain reported in a day over 51 years	in	9.2	3.6	3.5	2.5	2.9	3.5	8.2	5.5	9.2	3.6	4.0	6.7	3.2
Most rain reported in a month over 51 years	in	57.7	8.9	8.0	10.0	9.4	9.9	17.2	11.6	21.1	9.5	8.1	10.0	9.1
Least rain reported in a month over 51 years	in	20.6	0.1	0.3	-	1.1	1.4	0.9	0.4	0.1	0.1	0.1	0.3	0.1
Heating degree days over 50 years	days	4727	1065	851	645	287	88	5	-	1	44	236	586	919
Cooling degree days over 50 years	days	1454	-	-	3	29	109	307	424	368	176	36	2	-
Average number of days below 10°F over 51 years	days	10	5	2	1	-	-	-	-	-	-	-	-	2
Average number of days above 80°F over 12 years	days	51	-	1	4	11	23	29	27	16	6	1	-	118
Most snow reported in a month over 43 years	in	34.3	23.2	14.0	20.4	17.3	-	-	-	-	-	0.2	12.7	23.1
Average possibility of clouds over 10 years	%	52.3	58.7	61.5	60.8	53.5	52.4	50.1	40.8	38.8	42.5	50.7	57.5	61.6
Average number of snowy days over 43 years	days	13	4	3	2	1	-	-	-	-	-	-	1	2
Average number of days below 33°F over 51 years	days	98	26	21	14	2	-	-	-	-	-	1	12	22
Most snow reported in a day over 43 years	in	66.6	12.1	7.3	9.5	-	-	-	-	-	0.2	10.3	13.6	13.6
Deepest snow cover reported over 43 years	in	20.0	16.0	18.0	16.0	11.0	-	-	-	-	-	-	20.0	13.0
Average wet bulb point over 10 years	°F	50	28	30	39	48	59	66	71	69	62	51	42	32

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 38°30'N, Longitude: 89°50'W, Elevation: 450.0 ft, Distance: 7.91 mi

Latitude: 38°37'N, Longitude: 90°12'W, Elevation: 466.0 ft, Distance: 14.44 mi

Latitude: 38°19'N, Longitude: 90°9'W, Elevation: 650.0 ft, Distance: 15.59 mi

Latitude: 38°45'N, Longitude: 90°22'W, Elevation: 535.0 ft, Distance: 27.18 mi

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Weather Averages Belleville, IL