Readlyn Iowa Climate Data

Monthly Average Climate Data for Readlyn Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.6 °F25.7 °F1.09 in.
February12.6 °F29.8 °F1.13 in.
March24.4 °F43.2 °F1.99 in.
April35.9 °F57.9 °F3.93 in.
May48.1 °F69.9 °F4.96 in.
June58.9 °F79.6 °F5.92 in.
July62.0 °F82.5 °F4.69 in.
August59.3 °F80.5 °F4.17 in.
September50.8 °F74.5 °F3.7 in.
October38.5 °F61.1 °F2.85 in.
November26.3 °F44.8 °F1.94 in.
December15.3 °F31.4 °F1.57 in.
Annual36.7 °F56.7 °F37.94 in.

Climate Data for Readlyn 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 : -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