St. Louis, MO Weather & Growing Conditions
Tonight
46°F
Partly Cloudy
Partly cloudy, with a low around 46. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 63°F | Mostly Sunny | 6 to 9 mph W | 9% |
| Thursday Night | 46°F | Isolated Rain Showers then Mostly Cloudy | 6 mph NW | 16% |
| Friday | 55°F | Partly Sunny | 6 to 9 mph N | 6% |
| Friday Night | 36°F | Mostly Clear | 2 to 6 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 3 mph N | 0% |
| Saturday Night | 35°F | Mostly Clear | 1 mph NW | 0% |
| Sunday | 59°F | Sunny | 3 mph W | 0% |
| Sunday Night | 38°F | Mostly Clear | 1 mph W | 0% |
| Monday | 65°F | Sunny | 3 mph SW | 0% |
| Monday Night | 43°F | Clear | 2 mph SW | 1% |
| Tuesday | 66°F | Sunny | 3 mph W | 3% |
| Tuesday Night | 44°F | Mostly Clear | 1 mph NW | 3% |
| Veterans Day | 66°F | Mostly Sunny | 2 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Louis, MO
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
Explore more for St. Louis, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, St Louis Sci Ctr, Mo (0.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.