Grantwood Village, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grantwood Village, a town in St. Louis County, Missouri.
Today
98°F
Partly Sunny
Partly sunny, with a high near 98. Heat index values as high as 100. Southwest wind around 7 mph.
7-day forecast for Grantwood Village
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Partly Sunny | 7 mph SW | 2% |
| Tonight | 75°F | Partly Cloudy | 5 mph SW | 4% |
| Sunday | 93°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 mph W | 31% |
| Sunday Night | 69°F | Showers And Thunderstorms Likely | 5 to 8 mph NE | 66% |
| Monday | 79°F | Showers And Thunderstorms Likely | 5 to 8 mph NE | 66% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 8 mph N | 53% |
| Tuesday | 71°F | Slight Chance Rain Showers then Partly Sunny | 10 mph N | 21% |
| Tuesday Night | 56°F | Mostly Cloudy | 5 to 9 mph N | 4% |
| Wednesday | 74°F | Mostly Sunny | 8 mph N | 1% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 7 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 6 mph N | 1% |
| Thursday Night | 59°F | Partly Cloudy | 5 mph NE | 4% |
| Friday | 77°F | Partly Sunny | 6 mph NE | 7% |
| Friday Night | 59°F | Partly Cloudy | 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Grantwood Village (38.551, -90.354). Updated through the day.
Growing snapshot for Grantwood Village
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
More local growing data for Grantwood Village: nearby ZIP 63126 weather · frost dates · planting calendar · Missouri frost dates
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Climate data from the nearest NOAA station, St Louis Sci Ctr, Mo (8.1 mi from Grantwood Village). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.