Franklin Grove Illinois Climate Data

Monthly Average Climate Data for Franklin Grove Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.6 °F28.7 °F1.73 in.
February16.3 °F33.1 °F1.73 in.
March26.6 °F45.6 °F2.35 in.
April37.0 °F59.5 °F3.6 in.
May49.0 °F70.8 °F4.84 in.
June58.9 °F79.9 °F5.24 in.
July62.2 °F82.7 °F4.21 in.
August60.1 °F81.1 °F3.96 in.
September51.7 °F75.3 °F3.55 in.
October40.0 °F62.3 °F2.8 in.
November29.2 °F47.1 °F2.31 in.
December18.9 °F34.3 °F1.98 in.
Annual38.5 °F58.4 °F38.3 in.

Climate Data for Franklin Grove Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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