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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

WhenTempForecastWindPrecip
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

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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.