Deep River Iowa Climate Data

Monthly Average Climate Data for Deep River Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.8 °F28.6 °F1.12 in.
February15.4 °F33.4 °F1.38 in.
March26.4 °F46.6 °F2.14 in.
April37.6 °F60.1 °F3.72 in.
May50.2 °F71.2 °F4.88 in.
June60.9 °F81.1 °F5.38 in.
July64.0 °F84.5 °F4.31 in.
August61.4 °F82.6 °F4.37 in.
September52.4 °F75.9 °F3.56 in.
October40.3 °F62.9 °F2.85 in.
November28.3 °F47.2 °F2.14 in.
December18.0 °F34.3 °F1.54 in.
Annual38.9 °F59 °F37.39 in.

Climate Data for Deep River Iowa

Average First Frost DateOct. 11 - Oct. 20
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation