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.
Overnight
69°F
Clear
Clear, with a low around 69. Southeast wind around 2 mph.
7-day forecast for St. Louis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Clear | 2 mph SE | 0% |
| Tuesday | 89°F | Sunny | 5 mph S | 0% |
| Tuesday Night | 70°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 91°F | Sunny | 2 to 6 mph S | 11% |
| Wednesday Night | 73°F | Slight Chance Showers And Thunderstorms | 7 mph S | 66% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 5 mph S | 69% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 5 mph SE | 34% |
| Friday | 88°F | Chance Showers And Thunderstorms | 3 mph SW | 34% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 5 mph S | 31% |
| Saturday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph S | 31% |
| Saturday Night | 74°F | Mostly Clear | 6 mph S | 7% |
| Sunday | 93°F | Sunny | 5 to 8 mph S | 6% |
| Sunday Night | 76°F | Mostly Clear | 8 mph S | 5% |
| Monday | 94°F | Sunny | 8 mph SW | 5% |
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 Aug 4, 2026.