Winona Minnesota Climate Data

Monthly Average Climate Data for Winona Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.8 °F26.0 °F1.22 in.
February12.1 °F30.7 °F1.14 in.
March24.1 °F43.0 °F1.98 in.
April36.7 °F57.6 °F3.86 in.
May48.3 °F69.7 °F4.49 in.
June58.8 °F79.4 °F4.93 in.
July62.9 °F83.2 °F4.14 in.
August60.9 °F81.2 °F4.69 in.
September52.8 °F73.8 °F3.9 in.
October40.3 °F60.1 °F2.52 in.
November28.2 °F44.2 °F1.87 in.
December16.0 °F31.2 °F1.33 in.
Annual37.5 °F56.7 °F36.07 in.

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 : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation