Allendale Illinois Climate Data

Monthly Average Climate Data for Allendale Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.9 °F39.3 °F3.52 in.
February25.7 °F44.4 °F2.81 in.
March34.1 °F54.7 °F4.05 in.
April44.4 °F66.9 °F5.01 in.
May55.3 °F76.6 °F5.26 in.
June64.2 °F85.1 °F4.75 in.
July67.0 °F87.6 °F4.34 in.
August64.8 °F86.7 °F3.12 in.
September57.1 °F81.5 °F3.55 in.
October45.4 °F69.5 °F3.47 in.
November35.0 °F55.2 °F3.95 in.
December27.0 °F43.7 °F3.53 in.
Annual45.2 °F65.9 °F47.36 in.

Climate Data for Allendale Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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