Thayer Iowa Climate Data

Monthly Average Climate Data for Thayer Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.7 °F31.3 °F0.95 in.
February16.7 °F36.1 °F1.33 in.
March27.4 °F48.9 °F2.13 in.
April38.2 °F61.4 °F3.78 in.
May50.0 °F71.3 °F5.43 in.
June60.2 °F80.8 °F4.93 in.
July64.4 °F85.2 °F4.25 in.
August61.9 °F83.6 °F4.08 in.
September52.8 °F76.3 °F3.79 in.
October40.6 °F64.0 °F2.64 in.
November28.7 °F49.0 °F2.14 in.
December18.3 °F36.2 °F1.48 in.
Annual39.3 °F60.3 °F36.93 in.

Climate Data for Thayer 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 5b : -15°F to -10°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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