Southwest City, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southwest City, a town in Mcdonald County, Missouri.
Today
64°F
Patchy Drizzle then Sunny
Patchy drizzle before 9am. Sunny, with a high near 64. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Southwest City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Patchy Drizzle then Sunny | 5 to 10 mph W | 8% |
| Tonight | 44°F | Clear | 0 to 5 mph SW | 0% |
| Thursday | 66°F | Sunny | 0 to 5 mph W | 13% |
| Thursday Night | 44°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph N | 27% |
| Friday | 60°F | Partly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 39°F | Mostly Cloudy | 0 to 5 mph NE | 0% |
| Saturday | 59°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 63°F | Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 38°F | Clear | 0 mph | 0% |
| Monday | 67°F | Sunny | 0 to 5 mph S | 0% |
| Monday Night | 43°F | Clear | 0 mph | 1% |
| Tuesday | 70°F | Sunny | 0 to 5 mph SW | 1% |
| Tuesday Night | 47°F | Mostly Clear | 0 to 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Southwest City (36.517, -94.607). Updated through the day.
Growing snapshot for Southwest City
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
194 days
Hardiness zone
7a
More local growing data for Southwest City: nearby ZIP 64863 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Anderson 3W, Mo (8 mi from Southwest City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.