Superior Wisconsin Climate Data

Monthly Average Climate Data for Superior Wisconsin

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-15 °C-5.6 °C25.15 mm
February-13.4 °C-3.1 °C23.62 mm
March-7.3 °C2.1 °C32.77 mm
April-0.6 °C7.7 °C64.26 mm
May4.4 °C14.1 °C77.47 mm
June9.4 °C19.6 °C106.68 mm
July14.1 °C24.3 °C95.5 mm
August14.1 °C23.9 °C90.68 mm
September9.5 °C19.3 °C82.3 mm
October3.4 °C11.9 °C75.44 mm
November-3.3 °C4.4 °C46.99 mm
December-10.6 °C-2.8 °C33.27 mm
Annual0.4 °C9.7 °C754.13 mm

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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year