St. Louis, MO Weather & Growing Conditions
Today
61°F
Slight Chance Drizzle then Mostly Cloudy
A slight chance of drizzle before noon. Mostly cloudy, with a high near 61. West wind 7 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 12 mph W | 12% |
| Tonight | 46°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 66°F | Sunny | 5 to 9 mph W | 0% |
| Thursday Night | 48°F | Mostly Cloudy | 6 mph NW | 3% |
| Friday | 58°F | Partly Sunny | 5 to 9 mph N | 1% |
| Friday Night | 38°F | Partly Cloudy | 1 to 6 mph N | 0% |
| Saturday | 56°F | Mostly Sunny | 3 mph N | 0% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 61°F | Sunny | 1 to 5 mph NW | 1% |
| Sunday Night | 38°F | Clear | 2 mph W | 0% |
| Monday | 66°F | Sunny | 3 mph SW | 0% |
| Monday Night | 43°F | Clear | 2 mph SW | 0% |
| Tuesday | 69°F | Sunny | 3 mph W | 1% |
| Tuesday Night | 44°F | Mostly Clear | 1 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Louis, MO
Last spring frost
Apr 6
First fall frost
Oct 27
Growing season
203 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, Cahokia, Il (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.