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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.

This Afternoon
97°F
Sunny
Sunny. High near 97, with temperatures falling to around 95 in the afternoon. Heat index values as high as 99. Southwest wind around 10 mph, with gusts as high as 18 mph.

7-day forecast for Osceola

WhenTempForecastWindPrecip
This Afternoon 97°F Sunny 10 mph SW 0%
Tonight 70°F Partly Cloudy 3 to 8 mph SW 9%
Sunday 90°F Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 2 to 6 mph SW 33%
Sunday Night 65°F Chance Showers And Thunderstorms 6 mph N 66%
Monday 78°F Chance Showers And Thunderstorms 2 to 9 mph N 34%
Monday Night 58°F Mostly Cloudy 3 to 9 mph N 9%
Tuesday 73°F Partly Sunny 8 mph N 2%
Tuesday Night 54°F Partly Cloudy 2 to 8 mph NE 2%
Wednesday 75°F Mostly Sunny 2 to 6 mph NE 0%
Wednesday Night 54°F Mostly Clear 1 to 5 mph NE 2%
Thursday 79°F Mostly Sunny 3 mph E 8%
Thursday Night 59°F Mostly Cloudy then Slight Chance Rain Showers 3 mph E 15%
Friday 81°F Slight Chance Rain Showers 1 to 5 mph E 21%
Friday Night 61°F Slight Chance Rain Showers then Mostly Cloudy 5 mph E 16%

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.