Mercer Wisconsin Climate Data

Monthly Average Climate Data for Mercer Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.5 °F20.8 °F1.33 in.
February3.1 °F25.8 °F1.25 in.
March13.7 °F37.1 °F1.63 in.
April27.2 °F49.3 °F2.7 in.
May41.0 °F63.1 °F3.66 in.
June50.6 °F72.6 °F4.53 in.
July55.1 °F76.6 °F3.98 in.
August52.5 °F74.8 °F3.57 in.
September45.3 °F66.5 °F3.35 in.
October33.4 °F52.6 °F3.53 in.
November21.8 °F37.7 °F2.03 in.
December9.4 °F25.6 °F1.56 in.
Annual29.6 °F50.2 °F33.12 in.

Climate Data for Mercer Wisconsin

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 11 - Jun. 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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