Franklin Illinois Climate Data

Monthly Average Climate Data for Franklin Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.1 °C1.8 °C53.85 mm
February-5.1 °C4.7 °C49.02 mm
March-0.1 °C11 °C71.88 mm
April5.8 °C18.1 °C106.93 mm
May12.2 °C23.6 °C120.9 mm
June17.3 °C28.2 °C118.87 mm
July19.1 °C29.8 °C97.79 mm
August17.8 °C29.3 °C84.07 mm
September13.2 °C26.5 °C85.09 mm
October6.8 °C19.5 °C78.49 mm
November0.9 °C11.2 °C77.22 mm
December-4.1 °C4.7 °C55.63 mm
Annual6.4 °C17.4 °C999.74 mm

Climate Data for Franklin Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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