Anamosa Iowa Climate Data

Monthly Average Climate Data for Anamosa Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.9 °F27.9 °F1.31 in.
February14.6 °F32.4 °F1.51 in.
March25.8 °F45.6 °F2.36 in.
April36.8 °F59.8 °F3.93 in.
May48.4 °F70.8 °F4.75 in.
June58.7 °F80.0 °F5.51 in.
July62.2 °F83.1 °F4.96 in.
August59.7 °F81.4 °F4.4 in.
September51.0 °F75.1 °F3.67 in.
October39.3 °F62.3 °F3.07 in.
November27.6 °F46.7 °F2.31 in.
December17.4 °F33.5 °F1.72 in.
Annual37.7 °F58.2 °F39.5 in.

Climate Data for Anamosa 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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