Hartford Wisconsin Climate Data

Monthly Average Climate Data for Hartford Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.1 °F26.3 °F1.64 in.
February12.7 °F29.9 °F1.46 in.
March22.8 °F41.6 °F1.93 in.
April34.0 °F54.5 °F3.61 in.
May45.2 °F66.5 °F3.98 in.
June55.1 °F76.3 °F4.53 in.
July59.6 °F80.6 °F4.03 in.
August57.7 °F78.7 °F3.87 in.
September49.7 °F72.0 °F3.18 in.
October38.5 °F58.8 °F2.92 in.
November27.5 °F44.5 °F2.05 in.
December17.0 °F31.9 °F1.86 in.
Annual35.8 °F55.1 °F35.06 in.

Climate Data for Hartford 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 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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