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
97°F
Sunny
Sunny, with a high near 97. Heat index values as high as 101. South wind 5 to 10 mph.
7-day forecast for Southwest City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 75°F | Mostly Clear | 5 to 10 mph SE | 1% |
| Wednesday | 99°F | Mostly Sunny | 5 to 10 mph S | 4% |
| Wednesday Night | 74°F | Slight Chance Showers And Thunderstorms | 5 mph S | 15% |
| Thursday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 20% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 mph S | 68% |
| Friday | 93°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph S | 68% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 5 mph S | 31% |
| Saturday | 95°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 10 mph S | 16% |
| Saturday Night | 74°F | Mostly Clear | 5 mph S | 10% |
| Sunday | 96°F | Sunny | 5 to 10 mph S | 3% |
| Sunday Night | 74°F | Mostly Clear | 5 to 10 mph S | 2% |
| Monday | 96°F | Sunny | 10 mph S | 1% |
| Monday Night | 75°F | Mostly Clear | 10 mph S | 1% |
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 Aug 4, 2026.