Fillmore Illinois Climate Data

Monthly Average Climate Data for Fillmore Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.2 °F36.2 °F2.78 in.
February23.8 °F41.5 °F2.28 in.
March32.7 °F52.5 °F3.14 in.
April43.0 °F65.1 °F4.71 in.
May54.0 °F75.1 °F4.9 in.
June62.9 °F83.8 °F4.53 in.
July66.0 °F86.8 °F4.02 in.
August63.6 °F85.7 °F3.33 in.
September55.5 °F80.2 °F3.15 in.
October44.1 °F67.9 °F3.38 in.
November34.0 °F52.9 °F3.54 in.
December25.4 °F41.1 °F2.62 in.
Annual43.8 °F64.1 °F42.38 in.

Climate Data for Fillmore 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 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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