Delmar Iowa Climate Data

Monthly Average Climate Data for Delmar Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.0 °F27.8 °F1.37 in.
February14.6 °F32.3 °F1.61 in.
March25.8 °F45.4 °F2.31 in.
April36.7 °F59.0 °F3.71 in.
May48.7 °F70.4 °F4.45 in.
June58.9 °F79.7 °F5.07 in.
July62.2 °F82.6 °F4.27 in.
August59.9 °F80.9 °F4.19 in.
September51.4 °F74.9 °F3.64 in.
October39.6 °F61.9 °F2.96 in.
November27.9 °F46.5 °F2.14 in.
December17.5 °F33.5 °F1.78 in.
Annual37.9 °F57.9 °F37.5 in.

Climate Data for Delmar 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