Palmer Iowa Climate Data

Monthly Average Climate Data for Palmer Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.3 °F25.7 °F0.9 in.
February12.5 °F30.0 °F1.05 in.
March24.7 °F43.7 °F1.96 in.
April35.9 °F58.4 °F3.58 in.
May48.4 °F70.0 °F4.65 in.
June59.4 °F80.2 °F5.12 in.
July62.7 °F83.2 °F3.81 in.
August60.0 °F80.6 °F4.48 in.
September51.0 °F74.9 °F2.97 in.
October38.5 °F61.8 °F2.34 in.
November25.8 °F44.9 °F1.57 in.
December14.6 °F31.0 °F1.25 in.
Annual36.8 °F57 °F33.68 in.

Climate Data for Palmer Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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