Effingham Illinois Climate Data

Monthly Average Climate Data for Effingham Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.0 °F37.0 °F2.99 in.
February24.0 °F41.8 °F2.45 in.
March33.0 °F52.7 °F3.24 in.
April43.4 °F65.4 °F4.84 in.
May54.3 °F75.2 °F4.91 in.
June63.3 °F84.1 °F4.95 in.
July66.2 °F87.2 °F4.48 in.
August63.9 °F86.1 °F3.02 in.
September55.7 °F80.3 °F3.04 in.
October44.6 °F68.3 °F3.55 in.
November34.3 °F53.4 °F3.73 in.
December26.0 °F41.6 °F2.89 in.
Annual44.1 °F64.4 °F44.09 in.

Climate Data for Effingham Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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