Merrill Wisconsin Climate Data

Monthly Average Climate Data for Merrill Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January3.8 °F22.2 °F1.16 in.
February5.4 °F26.6 °F1.06 in.
March16.9 °F38.3 °F1.72 in.
April30.0 °F52.3 °F2.95 in.
May42.7 °F65.8 °F3.7 in.
June52.9 °F75.1 °F4.58 in.
July56.6 °F79.2 °F3.82 in.
August54.3 °F77.1 °F4.08 in.
September46.2 °F69.5 °F3.84 in.
October34.7 °F55.2 °F3.15 in.
November23.4 °F39.8 °F1.96 in.
December11.5 °F27.4 °F1.51 in.
Annual31.5 °F52.4 °F33.53 in.

Climate Data for Merrill Wisconsin

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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