St. George, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. George, a community in St. Louis County, Missouri.
Tonight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. Southwest wind around 6 mph.
7-day forecast for St. George
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Partly Cloudy | 6 mph SW | 1% |
| Sunday | 93°F | Partly Sunny | 6 mph W | 13% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 6 mph N | 64% |
| Monday | 80°F | Showers And Thunderstorms Likely | 6 mph NE | 59% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 7 mph NE | 42% |
| Tuesday | 73°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 20% |
| Tuesday Night | 56°F | Mostly Cloudy | 5 to 9 mph N | 0% |
| Wednesday | 74°F | Mostly Sunny | 7 mph N | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 5 mph N | 1% |
| Thursday Night | 60°F | Mostly Cloudy | 3 mph NE | 8% |
| Friday | 79°F | Slight Chance Rain Showers | 5 mph NE | 18% |
| Friday Night | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NE | 18% |
| Saturday | 82°F | Mostly Sunny | 3 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for St. George (38.538, -90.312). Updated through the day.
Growing snapshot for St. George
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
More local growing data for St. George: nearby ZIP 63123 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
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Calverton Park
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Clarkson Valley
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Country Club Hills
Country Life Acres
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Dellwood
Des Peres
Edmundson
Climate data from the nearest NOAA station, St Louis Sci Ctr, Mo (6.5 mi from St. George). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.