Winona Minnesota Climate Data

Monthly Average Climate Data for Winona Minnesota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.9 °C-3.3 °C30.99 mm
February-11.1 °C-0.7 °C28.96 mm
March-4.4 °C6.1 °C50.29 mm
April2.6 °C14.2 °C98.04 mm
May9.1 °C20.9 °C114.05 mm
June14.9 °C26.3 °C125.22 mm
July17.2 °C28.4 °C105.16 mm
August16.1 °C27.3 °C119.13 mm
September11.6 °C23.2 °C99.06 mm
October4.6 °C15.6 °C64.01 mm
November-2.1 °C6.8 °C47.5 mm
December-8.9 °C-0.4 °C33.78 mm
Annual3.1 °C13.7 °C916.19 mm

Climate Data for Winona Minnesota

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation