Red Oak Iowa Climate Data

Monthly Average Climate Data for Red Oak Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.8 °F32.2 °F0.86 in.
February16.8 °F37.3 °F1.13 in.
March27.8 °F50.4 °F2.02 in.
April38.2 °F62.8 °F3.43 in.
May50.7 °F73.2 °F5.82 in.
June61.3 °F82.4 °F5.55 in.
July65.0 °F85.8 °F3.59 in.
August62.2 °F84.2 °F3.89 in.
September52.8 °F78.1 °F3.35 in.
October40.5 °F65.8 °F3.06 in.
November28.0 °F49.7 °F1.9 in.
December18.2 °F37.0 °F1.35 in.
Annual39.5 °F61.6 °F35.95 in.

Climate Data for Red Oak 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 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com