Southwest City, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southwest City, a town in Mcdonald County, Missouri.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. South wind around 10 mph.
7-day forecast for Southwest City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 10 mph S | 0% |
| Tonight | 72°F | Mostly Clear | 5 to 10 mph S | 3% |
| Sunday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 37% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph NW | 49% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph N | 31% |
| Monday Night | 61°F | Partly Cloudy | 5 to 10 mph N | 4% |
| Tuesday | 82°F | Mostly Sunny | 5 to 10 mph N | 4% |
| Tuesday Night | 56°F | Mostly Clear | 5 to 10 mph NE | 4% |
| Wednesday | 83°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 58°F | Mostly Clear | 5 mph E | 1% |
| Thursday | 86°F | Mostly Sunny | 0 to 5 mph E | 5% |
| Thursday Night | 61°F | Partly Cloudy | 5 mph NE | 8% |
| Friday | 86°F | Slight Chance Rain Showers | 5 mph NE | 16% |
| Friday Night | 64°F | Mostly Cloudy | 5 mph NE | 14% |
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 Sep 20, 2026.