Winona, MO Weather & Growing Conditions
Today
90°F
Sunny
Sunny. High near 90, with temperatures falling to around 87 in the afternoon. Heat index values as high as 93. Southeast wind around 2 mph.
7-day forecast
| 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 | 1% |
| Wednesday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 mph S | 27% |
| Thursday | 92°F | Chance Showers And Thunderstorms | 2 mph S | 40% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 mph S | 51% |
| Friday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 mph SW | 61% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 mph SE | 41% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 1 mph SW | 26% |
| Saturday Night | 70°F | Partly Cloudy | 1 mph SW | 13% |
| Sunday | 92°F | Sunny | 2 mph SW | 3% |
| Sunday Night | 71°F | Mostly Clear | 1 mph S | 2% |
| Monday | 93°F | Sunny | 2 mph S | 4% |
| Monday Night | 72°F | Mostly Clear | 2 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winona, MO
Last spring frost
Apr 22
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
6b
Explore more for Winona, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Winona 3 Sw, Mo (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.