Fairfax Iowa Climate Data

Monthly Average Climate Data for Fairfax Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.8 °F28.4 °F1.08 in.
February15.5 °F32.9 °F1.25 in.
March26.7 °F46.1 °F2.11 in.
April37.8 °F60.3 °F3.71 in.
May49.9 °F71.3 °F4.47 in.
June60.4 °F80.6 °F5.52 in.
July63.6 °F83.7 °F4.47 in.
August61.0 °F81.9 °F4.33 in.
September52.4 °F75.9 °F3.65 in.
October40.3 °F62.8 °F2.88 in.
November28.3 °F47.2 °F2.19 in.
December17.9 °F33.9 °F1.59 in.
Annual38.8 °F58.8 °F37.25 in.

Climate Data for Fairfax 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com