Vermilion Illinois Climate Data

Monthly Average Climate Data for Vermilion Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.3 °F35.5 °F2.9 in.
February22.4 °F40.5 °F2.5 in.
March31.7 °F51.5 °F3.18 in.
April42.1 °F64.0 °F4.78 in.
May53.1 °F74.1 °F4.51 in.
June62.2 °F82.7 °F4.98 in.
July64.8 °F85.3 °F4.17 in.
August62.7 °F84.3 °F3.1 in.
September55.0 °F79.0 °F3.12 in.
October43.6 °F66.8 °F3.7 in.
November33.3 °F52.3 °F3.54 in.
December24.7 °F40.3 °F2.82 in.
Annual42.9 °F63 °F43.3 in.

Climate Data for Vermilion Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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