Preston Iowa Climate Data

Monthly Average Climate Data for Preston Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.1 °F28.9 °F1.44 in.
February15.6 °F33.4 °F1.65 in.
March26.7 °F46.2 °F2.31 in.
April37.5 °F59.8 °F3.72 in.
May49.3 °F71.3 °F4.45 in.
June59.3 °F80.7 °F5.22 in.
July62.8 °F83.7 °F4.37 in.
August60.5 °F81.9 °F4.05 in.
September52.1 °F75.8 °F3.6 in.
October40.5 °F62.8 °F2.91 in.
November29.0 °F47.5 °F2.22 in.
December18.6 °F34.5 °F1.83 in.
Annual38.7 °F58.9 °F37.77 in.

Climate Data for Preston Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°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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