Franklin Iowa Climate Data

Monthly Average Climate Data for Franklin Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.8 °C0.6 °C39.37 mm
February-6.8 °C3.2 °C47.75 mm
March-1.1 °C10.1 °C64.26 mm
April5 °C17.3 °C95.5 mm
May11.6 °C22.9 °C130.3 mm
June16.9 °C28.2 °C126.24 mm
July19 °C30.2 °C106.93 mm
August17.8 °C29.3 °C97.28 mm
September13 °C25.7 °C96.27 mm
October6.6 °C18.5 °C77.98 mm
November0.1 °C10.2 °C62.74 mm
December-5.6 °C3.3 °C49.02 mm
Annual5.6 °C16.6 °C993.64 mm

Climate Data for Franklin Iowa

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 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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