Charles City Iowa Climate Data

Monthly Average Climate Data for Charles City Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.1 °C-3.8 °C25.65 mm
February-10.9 °C-1.4 °C28.7 mm
March-4.3 °C5.8 °C49.78 mm
April2.3 °C14.5 °C96.27 mm
May9.1 °C21.1 °C129.29 mm
June15 °C26.4 °C159.77 mm
July16.8 °C28.1 °C121.16 mm
August15.3 °C26.8 °C107.7 mm
September10.6 °C23.6 °C93.98 mm
October3.7 °C16.2 °C68.83 mm
November-3.1 °C6.8 °C44.45 mm
December-9.3 °C-0.6 °C34.54 mm
Annual2.7 °C13.6 °C960.12 mm

Climate Data for Charles City Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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