Dawson Iowa Climate Data

Monthly Average Climate Data for Dawson Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.8 °F28.7 °F0.91 in.
February14.7 °F33.2 °F1.15 in.
March26.2 °F46.5 °F2.13 in.
April37.3 °F60.7 °F3.73 in.
May49.7 °F71.5 °F4.87 in.
June60.2 °F80.9 °F5.42 in.
July63.7 °F84.6 °F4.16 in.
August60.9 °F82.2 °F4.07 in.
September52.0 °F76.7 °F3.34 in.
October39.6 °F63.6 °F2.74 in.
November27.4 °F47.4 °F1.75 in.
December16.8 °F34.0 °F1.34 in.
Annual38.3 °F59.2 °F35.61 in.

Climate Data for Dawson 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 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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