Superior Wisconsin Climate Data

Monthly Average Climate Data for Superior Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January5.0 °F22.0 °F0.99 in.
February7.9 °F26.4 °F0.93 in.
March18.8 °F35.8 °F1.29 in.
April30.9 °F45.9 °F2.53 in.
May39.9 °F57.4 °F3.05 in.
June49.0 °F67.2 °F4.2 in.
July57.3 °F75.7 °F3.76 in.
August57.3 °F75.1 °F3.57 in.
September49.1 °F66.7 °F3.24 in.
October38.1 °F53.5 °F2.97 in.
November26.0 °F40.0 °F1.85 in.
December12.9 °F27.0 °F1.31 in.
Annual32.7 °F49.4 °F29.69 in.

Climate Data for Superior 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 ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year