St. Louis, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Louis, a city in St. Louis City County, Missouri.
Tonight
75°F
Partly Cloudy
Partly cloudy, with a low around 75. Southeast wind around 6 mph.
7-day forecast for St. Louis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Partly Cloudy | 6 mph SE | 13% |
| Saturday | 99°F | Mostly Sunny | 3 to 7 mph SW | 6% |
| Saturday Night | 75°F | Partly Cloudy | 5 mph SW | 2% |
| Sunday | 94°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 mph W | 20% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph N | 60% |
| Monday | 81°F | Showers And Thunderstorms Likely | 8 mph N | 71% |
| Monday Night | 62°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 6 to 9 mph N | 71% |
| Tuesday | 72°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 24% |
| Tuesday Night | 57°F | Mostly Cloudy | 5 to 10 mph N | 6% |
| Wednesday | 75°F | Mostly Sunny | 8 mph N | 2% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 7 mph N | 1% |
| Thursday | 75°F | Mostly Sunny | 3 to 7 mph N | 3% |
| Thursday Night | 60°F | Partly Cloudy | 6 mph NE | 3% |
| Friday | 77°F | Mostly Sunny | 6 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov) for St. Louis (38.636, -90.245). Updated through the day.
Growing snapshot for St. Louis
Last spring frost
Apr 1
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
More local growing data for St. Louis: nearby ZIP 63108 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, St Louis Sci Ctr, Mo (1.3 mi from St. Louis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.