Miller Iowa Climate Data

Monthly Average Climate Data for Miller Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.9 °C-4.6 °C23.62 mm
February-11.6 °C-1.9 °C24.38 mm
March-4.7 °C5.1 °C50.04 mm
April1.7 °C13.6 °C95 mm
May8.6 °C20.5 °C123.44 mm
June14.6 °C26 °C135.64 mm
July16.4 °C27.7 °C110.74 mm
August14.8 °C26.4 °C98.04 mm
September9.9 °C23.1 °C81.28 mm
October3.1 °C15.7 °C59.18 mm
November-3.7 °C6.3 °C40.13 mm
December-10.1 °C-1.3 °C32.77 mm
Annual2.1 °C13.1 °C874.26 mm

Climate Data for Miller Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com