Fairfield Iowa Climate Data

Monthly Average Climate Data for Fairfield Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F31.7 °F1.46 in.
February18.2 °F36.2 °F1.71 in.
March29.0 °F49.2 °F2.3 in.
April39.9 °F62.6 °F3.77 in.
May51.7 °F72.7 °F5.41 in.
June61.7 °F82.1 °F5.06 in.
July65.3 °F85.8 °F4.13 in.
August62.8 °F84.0 °F3.99 in.
September53.9 °F77.5 °F3.62 in.
October42.3 °F64.7 °F2.93 in.
November30.7 °F49.4 °F2.3 in.
December20.7 °F36.7 °F1.72 in.
Annual40.9 °F61.1 °F38.4 in.

Climate Data for Fairfield 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 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com