Dexter Iowa Climate Data

Monthly Average Climate Data for Dexter Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.2 °C-1.1 °C22.61 mm
February-8.8 °C1.7 °C29.97 mm
March-2.9 °C8.8 °C51.56 mm
April3.3 °C16.3 °C93.22 mm
May10 °C21.9 °C127.25 mm
June15.7 °C27.2 °C129.54 mm
July17.9 °C29.3 °C106.43 mm
August16.4 °C28.3 °C102.11 mm
September11.6 °C24.8 °C89.15 mm
October4.7 °C17.7 °C68.33 mm
November-2.1 °C9 °C46.23 mm
December-8.1 °C1.7 °C33.53 mm
Annual3.9 °C15.5 °C899.93 mm

Climate Data for Dexter Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°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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