Winona, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winona, a city in Shannon County, Missouri.
Today
90°F
Sunny
Sunny. High near 90, with temperatures falling to around 87 in the afternoon. Heat index values as high as 92. Southeast wind around 2 mph.
7-day forecast for Winona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 2 mph SE | 0% |
| Tonight | 66°F | Mostly Clear | 1 mph SE | 0% |
| Wednesday | 92°F | Sunny | 2 mph S | 2% |
| Wednesday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 mph S | 28% |
| Thursday | 92°F | Chance Showers And Thunderstorms | 2 mph S | 41% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 mph S | 52% |
| Friday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 mph SW | 60% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph S | 40% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 1 mph SW | 25% |
| Saturday Night | 69°F | Partly Cloudy | 1 mph S | 13% |
| Sunday | 92°F | Sunny | 2 mph S | 3% |
| Sunday Night | 71°F | Mostly Clear | 1 mph S | 2% |
| Monday | 93°F | Sunny | 3 mph S | 4% |
| Monday Night | 72°F | Mostly Clear | 2 mph S | 4% |
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 Aug 4, 2026.