Ashton Illinois Climate Data

Monthly Average Climate Data for Ashton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.4 °F28.6 °F1.69 in.
February16.1 °F33.0 °F1.69 in.
March26.3 °F45.4 °F2.28 in.
April36.7 °F59.3 °F3.6 in.
May48.6 °F70.7 °F4.82 in.
June58.6 °F79.7 °F5.23 in.
July61.9 °F82.5 °F4.17 in.
August59.8 °F80.9 °F3.89 in.
September51.5 °F75.1 °F3.54 in.
October39.8 °F62.2 °F2.78 in.
November29.1 °F47.0 °F2.32 in.
December18.6 °F34.2 °F1.94 in.
Annual38.3 °F58.2 °F37.95 in.

Climate Data for Ashton Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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