Vermont Illinois Climate Data

Monthly Average Climate Data for Vermont Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.2 °F33.5 °F1.95 in.
February19.9 °F38.3 °F1.92 in.
March29.7 °F50.4 °F2.51 in.
April40.4 °F63.2 °F3.91 in.
May52.2 °F73.4 °F4.98 in.
June61.6 °F82.2 °F4.8 in.
July64.7 °F85.4 °F4.03 in.
August62.3 °F83.9 °F3.59 in.
September53.9 °F78.4 °F3.57 in.
October42.5 °F65.8 °F3.08 in.
November31.4 °F51.2 °F2.72 in.
December21.9 °F38.6 °F2.11 in.
Annual41.4 °F62 °F39.17 in.

Climate Data for Vermont 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 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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