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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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.