New Haven Iowa Climate Data

Monthly Average Climate Data for New Haven Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.3 °F24.1 °F0.98 in.
February11.3 °F28.4 °F1.12 in.
March23.3 °F41.2 °F1.88 in.
April35.2 °F56.7 °F3.9 in.
May47.5 °F69.0 °F5.05 in.
June58.1 °F78.6 °F5.92 in.
July61.4 °F81.8 °F4.62 in.
August58.8 °F79.6 °F4.17 in.
September50.3 °F73.6 °F3.7 in.
October37.9 °F60.1 °F2.76 in.
November25.7 °F43.4 °F1.75 in.
December14.3 °F29.7 °F1.44 in.
Annual35.9 °F55.5 °F37.29 in.

Climate Data for New Haven Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost150-180 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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