Southwest City, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Southwest City, a town in Mcdonald County, Missouri.
Overnight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. South wind around 5 mph.
7-day forecast for Southwest City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Partly Cloudy | 5 mph S | 4% |
| Sunday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph S | 28% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 55% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 0 to 10 mph N | 22% |
| Monday Night | 61°F | Partly Cloudy | 5 to 10 mph N | 2% |
| 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% |
| Saturday | 89°F | Partly Sunny | 5 mph E | 7% |
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.