Millersburg Iowa Climate Data

Monthly Average Climate Data for Millersburg Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.9 °F29.0 °F1.18 in.
February15.6 °F33.7 °F1.42 in.
March26.5 °F46.7 °F2.18 in.
April37.6 °F60.4 °F3.71 in.
May50.0 °F71.3 °F4.99 in.
June60.6 °F80.9 °F5.16 in.
July63.8 °F84.2 °F4.17 in.
August61.0 °F82.4 °F4.57 in.
September52.1 °F76.1 °F3.44 in.
October40.1 °F63.1 °F2.94 in.
November28.2 °F47.6 °F2.08 in.
December18.0 °F34.5 °F1.61 in.
Annual38.8 °F59.2 °F37.45 in.

Climate Data for Millersburg Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com