Franklin Illinois Climate Data

Monthly Average Climate Data for Franklin Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.3 °F35.3 °F2.12 in.
February22.8 °F40.4 °F1.93 in.
March31.9 °F51.8 °F2.83 in.
April42.4 °F64.6 °F4.21 in.
May54.0 °F74.4 °F4.76 in.
June63.2 °F82.8 °F4.68 in.
July66.3 °F85.7 °F3.85 in.
August64.1 °F84.7 °F3.31 in.
September55.8 °F79.7 °F3.35 in.
October44.3 °F67.1 °F3.09 in.
November33.6 °F52.1 °F3.04 in.
December24.7 °F40.4 °F2.19 in.
Annual43.5 °F63.3 °F39.36 in.

Climate Data for Franklin 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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