Winona, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winona, a city in Winona County, Minnesota.
Today
77°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 77, with temperatures falling to around 75 in the afternoon. West wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Winona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms Likely | 6 to 9 mph W | 68% |
| Tonight | 58°F | Rain Showers Likely | 2 to 6 mph W | 73% |
| Wednesday | 77°F | Mostly Sunny | 3 mph NW | 1% |
| Wednesday Night | 56°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 81°F | Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 mph S | 1% |
| Friday | 84°F | Sunny | 3 to 10 mph SW | 9% |
| Friday Night | 64°F | Slight Chance Rain Showers | 5 to 9 mph SW | 19% |
| Saturday | 85°F | Slight Chance Rain Showers then Sunny | 3 to 8 mph SW | 19% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 40% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 40% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 40% |
| Monday | 83°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 6 mph E | 40% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 mph N | 27% |
Forecast source: National Weather Service (api.weather.gov) for Winona (44.051, -91.668). Updated through the day.
Growing snapshot for Winona
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5a
More local growing data for Winona: nearby ZIP 55987 weather · frost dates · planting calendar · Minnesota frost dates
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Utica
Climate data from the nearest NOAA station, Winona, Mn (3.4 mi from Winona). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.