Assumption Illinois Climate Data

Monthly Average Climate Data for Assumption Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.6 °F35.9 °F2.26 in.
February22.7 °F40.9 °F2.03 in.
March31.8 °F52.0 °F2.79 in.
April42.4 °F64.9 °F4.37 in.
May53.6 °F75.1 °F4.74 in.
June62.4 °F83.5 °F4.98 in.
July65.3 °F86.5 °F3.61 in.
August63.2 °F85.3 °F2.96 in.
September55.1 °F80.3 °F3.32 in.
October43.8 °F68.0 °F3.34 in.
November33.3 °F52.5 °F3.34 in.
December25.0 °F40.7 °F2.46 in.
Annual43.2 °F63.8 °F40.2 in.

Climate Data for Assumption 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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