Thornton Wisconsin Climate Data

Monthly Average Climate Data for Thornton Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.3 °F24.7 °F1.28 in.
February8.9 °F28.8 °F1.09 in.
March19.8 °F40.5 °F1.79 in.
April32.1 °F54.5 °F3.05 in.
May44.3 °F67.4 °F3.76 in.
June54.3 °F76.9 °F4.42 in.
July58.4 °F81.1 °F3.87 in.
August56.4 °F79.2 °F3.65 in.
September48.1 °F71.5 °F3.63 in.
October36.6 °F57.7 °F3.0 in.
November25.9 °F42.8 °F1.96 in.
December14.4 °F29.8 °F1.6 in.
Annual33.9 °F54.6 °F33.1 in.

Climate Data for Thornton Wisconsin

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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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