Mount Union Iowa Climate Data

Monthly Average Climate Data for Mount Union Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.3 °F31.7 °F1.46 in.
February19.1 °F36.5 °F1.75 in.
March29.2 °F49.2 °F2.44 in.
April40.2 °F62.3 °F3.72 in.
May52.1 °F72.8 °F5.1 in.
June61.9 °F82.0 °F4.9 in.
July65.2 °F85.3 °F4.06 in.
August63.0 °F83.8 °F3.96 in.
September54.1 °F77.6 °F3.6 in.
October42.6 °F64.8 °F2.88 in.
November31.2 °F49.5 °F2.28 in.
December21.2 °F37.0 °F1.8 in.
Annual41.3 °F61 °F37.95 in.

Climate Data for Mount Union 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 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation