Monmouth Iowa Climate Data

Monthly Average Climate Data for Monmouth Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.7 °C-2.3 °C34.04 mm
February-9.7 °C0.2 °C39.88 mm
March-3.4 °C7.5 °C56.9 mm
April2.7 °C15.3 °C93.47 mm
May9.3 °C21.6 °C111.25 mm
June15 °C26.8 °C132.33 mm
July16.8 °C28.4 °C108.97 mm
August15.6 °C27.5 °C106.93 mm
September10.7 °C24.1 °C92.2 mm
October4.2 °C16.8 °C75.95 mm
November-2.3 °C8.2 °C54.36 mm
December-8 °C0.9 °C43.94 mm
Annual3.3 °C14.6 °C950.22 mm

Climate Data for Monmouth 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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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