Alma Illinois Climate Data

Monthly Average Climate Data for Alma Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.1 °F37.9 °F3.03 in.
February25.5 °F42.8 °F2.47 in.
March33.9 °F53.3 °F3.66 in.
April44.2 °F65.4 °F4.62 in.
May55.2 °F75.1 °F4.94 in.
June64.1 °F84.0 °F4.8 in.
July67.3 °F86.9 °F4.18 in.
August64.5 °F85.9 °F3.62 in.
September56.2 °F80.0 °F3.44 in.
October45.1 °F68.6 °F3.4 in.
November35.1 °F53.7 °F3.84 in.
December27.1 °F42.3 °F2.91 in.
Annual45 °F64.7 °F44.91 in.

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