Plain Wisconsin Climate Data

Monthly Average Climate Data for Plain Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.1 °F26.8 °F1.4 in.
February11.7 °F31.1 °F1.36 in.
March22.8 °F43.3 °F2.04 in.
April34.5 °F56.8 °F4.0 in.
May46.4 °F68.9 °F4.47 in.
June56.9 °F78.4 °F5.47 in.
July60.6 °F82.0 °F4.58 in.
August58.4 °F80.2 °F4.16 in.
September49.9 °F73.0 °F3.56 in.
October38.1 °F60.1 °F2.79 in.
November26.8 °F44.9 °F2.13 in.
December16.0 °F32.2 °F1.63 in.
Annual35.9 °F56.5 °F37.59 in.

Climate Data for Plain Wisconsin

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 : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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