New Haven Iowa Climate Data

Monthly Average Climate Data for New Haven Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.7 °C-4.4 °C24.89 mm
February-11.5 °C-2 °C28.45 mm
March-4.8 °C5.1 °C47.75 mm
April1.8 °C13.7 °C99.06 mm
May8.6 °C20.6 °C128.27 mm
June14.5 °C25.9 °C150.37 mm
July16.3 °C27.7 °C117.35 mm
August14.9 °C26.4 °C105.92 mm
September10.2 °C23.1 °C93.98 mm
October3.3 °C15.6 °C70.1 mm
November-3.5 °C6.3 °C44.45 mm
December-9.8 °C-1.3 °C36.58 mm
Annual2.2 °C13.1 °C947.17 mm

Climate Data for New Haven Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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