Osceola, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osceola, a city in St. Clair County, Missouri.
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 101. Southwest wind 6 to 12 mph, with gusts as high as 23 mph.
7-day forecast for Osceola
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 6 to 12 mph SW | 1% |
| Tonight | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 6 mph SW | 19% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 6 mph W | 45% |
| Sunday Night | 66°F | Showers And Thunderstorms | 5 mph N | 80% |
| Monday | 77°F | Showers And Thunderstorms | 2 to 10 mph N | 80% |
| Monday Night | 58°F | Mostly Cloudy | 5 to 10 mph N | 13% |
| Tuesday | 72°F | Partly Sunny | 8 mph NE | 3% |
| Tuesday Night | 54°F | Partly Cloudy | 2 to 9 mph NE | 1% |
| Wednesday | 75°F | Sunny | 2 to 6 mph NE | 1% |
| Wednesday Night | 55°F | Partly Cloudy | 1 to 5 mph NE | 2% |
| Thursday | 78°F | Mostly Sunny | 1 to 5 mph E | 5% |
| Thursday Night | 59°F | Slight Chance Rain Showers | 5 mph E | 15% |
| Friday | 78°F | Slight Chance Rain Showers | 5 mph E | 19% |
| Friday Night | 60°F | Mostly Cloudy | 5 mph E | 13% |
Forecast source: National Weather Service (api.weather.gov) for Osceola (38.046, -93.694). Updated through the day.
Growing snapshot for Osceola
Last spring frost
Apr 16
First fall frost
Oct 24
Growing season
189 days
Hardiness zone
6b
More local growing data for Osceola: nearby ZIP 64776 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Osceola, Mo (1.6 mi from Osceola). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.