Rock Rapids Iowa Climate Data

Monthly Average Climate Data for Rock Rapids Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.7 °F25.3 °F0.61 in.
February11.0 °F30.0 °F0.72 in.
March22.7 °F42.9 °F1.51 in.
April34.0 °F57.6 °F3.01 in.
May46.9 °F69.9 °F3.91 in.
June58.2 °F80.3 °F4.9 in.
July61.6 °F83.9 °F3.51 in.
August58.8 °F81.7 °F3.17 in.
September49.6 °F74.9 °F3.26 in.
October36.6 °F60.8 °F2.33 in.
November23.5 °F43.9 °F1.46 in.
December12.3 °F30.0 °F0.88 in.
Annual35.2 °F56.8 °F29.27 in.

Climate Data for Rock Rapids 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 4b : -25°F to -20°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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