Winona, MN Weather & Growing Conditions
Overnight
57°F
Showers And Thunderstorms
Showers and thunderstorms before 5am, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 57. East wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Showers And Thunderstorms | 13 to 17 mph E | 97% |
| Saturday | 63°F | Chance Showers And Thunderstorms | 7 to 12 mph E | 71% |
| Saturday Night | 54°F | Slight Chance Showers And Thunderstorms then Cloudy | 7 to 13 mph NE | 23% |
| Sunday | 66°F | Partly Sunny | 14 mph NE | 3% |
| Sunday Night | 49°F | Mostly Cloudy | 8 to 12 mph NE | 4% |
| Monday | 62°F | Mostly Cloudy | 9 mph NE | 9% |
| Monday Night | 45°F | Mostly Cloudy | 5 to 8 mph NE | 6% |
| Tuesday | 61°F | Mostly Sunny | 5 to 8 mph NE | 6% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph E | 2% |
| Wednesday | 64°F | Sunny | 3 to 7 mph E | 1% |
| Wednesday Night | 47°F | Mostly Clear | 3 mph E | 3% |
| Thursday | 65°F | Mostly Sunny | 5 mph E | 7% |
| Thursday Night | 50°F | Partly Cloudy | 2 mph E | 3% |
| Friday | 68°F | Mostly Sunny | 5 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winona, MN
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5a
Explore more for Winona, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Winona, Mn (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.