Winona, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winona, a city in Shannon County, Missouri.
Tonight
70°F
Mostly Clear
Mostly clear, with a low around 70. Heat index values as high as 97. South wind around 1 mph.
7-day forecast for Winona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Mostly Clear | 1 mph S | 10% |
| Saturday | 100°F | Sunny | 3 mph SW | 1% |
| Saturday Night | 71°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 99°F | Sunny | 3 mph SW | 2% |
| Sunday Night | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 1 mph NW | 34% |
| Monday | 91°F | Showers And Thunderstorms Likely | 2 mph N | 62% |
| Monday Night | 62°F | Showers And Thunderstorms Likely | 2 mph N | 62% |
| Tuesday | 81°F | Slight Chance Rain Showers then Partly Sunny | 3 mph N | 15% |
| Tuesday Night | 55°F | Partly Cloudy | 3 mph N | 7% |
| Wednesday | 81°F | Mostly Sunny | 2 mph N | 2% |
| Wednesday Night | 54°F | Mostly Clear | 2 mph N | 2% |
| Thursday | 82°F | Sunny | 2 mph N | 4% |
| Thursday Night | 56°F | Partly Cloudy | 1 mph NE | 4% |
| Friday | 81°F | Mostly Sunny | 2 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov) for Winona (37.004, -91.327). Updated through the day.
Growing snapshot for Winona
Last spring frost
Apr 22
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
6b
More local growing data for Winona: nearby ZIP 65588 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Winona 3 Sw, Mo (5.1 mi from Winona). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.