Historical Weather for Grafton, Illinois

Weather Station Latitude: 38°45'N Longitude: 90°22'W
Elevation: 172 Meters

Estimate distance to Grafton, IL: 15.6 miles

Average Temperature

Years on record: 165

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
°C	-0.4	1.6	6.7	13.4	18.9	23.9	26.3	25.2	21.0	14.4	7.1	1.4

Average High Temperature

Years on record: 57

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
°C	3.7	6.8	12.4	19.4	24.5	29.4	31.7	30.8	26.7	20.5	12.4	6.0

Average Low Temperature

Years on record: 56

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
°C	-5.8	-3.2	1.4	7.7	13.2	18.5	21.0	19.8	15.2	8.8	2.4	-3.0

Average Precipitation

Years on record: 166

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec
cm	5.6	6.0	8.7	9.5	10.8	10.8	9.0	8.3	7.9	7.2	7.4	6.2