Worthington Iowa Climate Data

Monthly Average Climate Data for Worthington Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.6 °F26.8 °F1.23 in.
February13.3 °F31.2 °F1.43 in.
March24.9 °F44.4 °F2.17 in.
April35.9 °F58.4 °F3.85 in.
May47.6 °F69.8 °F4.46 in.
June58.0 °F79.3 °F5.88 in.
July61.4 °F82.4 °F4.73 in.
August59.1 °F80.7 °F4.41 in.
September50.2 °F74.0 °F3.68 in.
October38.4 °F61.1 °F3.07 in.
November26.9 °F45.4 °F2.26 in.
December16.4 °F32.5 °F1.69 in.
Annual36.8 °F57.2 °F38.86 in.

Climate Data for Worthington 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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