Salem Iowa Climate Data

Monthly Average Climate Data for Salem Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.8 °F32.4 °F1.47 in.
February19.4 °F37.0 °F1.76 in.
March29.8 °F49.7 °F2.45 in.
April40.8 °F62.9 °F3.72 in.
May52.6 °F73.1 °F5.18 in.
June62.3 °F82.3 °F4.97 in.
July65.9 °F85.9 °F4.14 in.
August63.7 °F84.4 °F3.68 in.
September55.0 °F77.9 °F3.64 in.
October43.4 °F65.0 °F2.94 in.
November31.9 °F50.1 °F2.26 in.
December21.7 °F37.5 °F1.76 in.
Annual41.9 °F61.5 °F37.97 in.

Climate Data for Salem Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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