Maynard Iowa Climate Data

Monthly Average Climate Data for Maynard Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.0 °F25.2 °F1.14 in.
February11.7 °F29.4 °F1.17 in.
March23.9 °F42.8 °F1.97 in.
April35.4 °F57.5 °F3.82 in.
May47.5 °F69.5 °F4.7 in.
June58.4 °F79.2 °F5.81 in.
July61.4 °F81.8 °F5.11 in.
August58.9 °F79.8 °F4.06 in.
September50.4 °F74.0 °F3.69 in.
October37.9 °F60.9 °F2.79 in.
November25.8 °F44.4 °F1.91 in.
December14.8 °F31.0 °F1.55 in.
Annual36.2 °F56.3 °F37.72 in.

Climate Data for Maynard Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year