Stewartsville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stewartsville, a city in Clinton County, Missouri.
This Afternoon
91°F
Sunny
Sunny, with a high near 91. Heat index values as high as 99. South southwest wind around 10 mph.
7-day forecast for Stewartsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Sunny | 10 mph SSW | 2% |
| Tonight | 73°F | Partly Cloudy | 6 to 9 mph S | 11% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms | 8 to 13 mph SW | 21% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph N | 73% |
| Sunday | 76°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 41% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 53% |
| Monday | 67°F | Chance Rain Showers | 8 to 12 mph NNE | 51% |
| Monday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 12 mph NNE | 22% |
| Tuesday | 64°F | Mostly Cloudy | 9 mph NE | 8% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 8 mph NE | 6% |
| Wednesday | 68°F | Mostly Sunny | 6 mph ENE | 2% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 mph E | 6% |
| Thursday | 70°F | Slight Chance Rain Showers | 5 mph E | 16% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 3 mph E | 19% |
Forecast source: National Weather Service (api.weather.gov) for Stewartsville (39.756, -94.499). Updated through the day.
Growing snapshot for Stewartsville
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6a
More local growing data for Stewartsville: nearby ZIP 64490 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cosby 2W, Mo (12.8 mi from Stewartsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.