Exeter Illinois Climate Data

Monthly Average Climate Data for Exeter Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.5 °F35.6 °F2.19 in.
February22.0 °F40.8 °F1.95 in.
March31.1 °F52.2 °F2.78 in.
April41.6 °F64.9 °F4.05 in.
May52.9 °F74.7 °F4.77 in.
June62.3 °F83.4 °F5.01 in.
July65.8 °F86.8 °F4.01 in.
August63.3 °F85.6 °F3.58 in.
September55.0 °F79.8 °F3.37 in.
October43.4 °F67.5 °F3.08 in.
November32.7 °F52.9 °F2.97 in.
December23.9 °F40.6 °F2.36 in.
Annual42.7 °F63.7 °F40.12 in.

Climate Data for Exeter Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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