St. Thomas, MO Weather & Growing Conditions
This Afternoon
56°F
Cloudy
Cloudy, with a high near 56. West wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Cloudy | 7 mph W | 0% |
| Tonight | 41°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 62°F | Sunny | 3 to 7 mph W | 9% |
| Thursday Night | 43°F | Isolated Rain Showers then Mostly Cloudy | 3 mph NW | 17% |
| Friday | 55°F | Partly Sunny | 6 mph N | 11% |
| Friday Night | 33°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 1 mph N | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 mph | 0% |
| Sunday | 62°F | Sunny | 2 mph W | 0% |
| Sunday Night | 35°F | Clear | 0 mph | 0% |
| Monday | 67°F | Sunny | 0 to 3 mph SW | 0% |
| Monday Night | 40°F | Clear | 2 mph SW | 1% |
| Tuesday | 69°F | Sunny | 2 mph W | 3% |
| Tuesday Night | 42°F | Mostly Clear | 0 mph | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Thomas, MO
Last spring frost
Apr 7
First fall frost
Nov 1
Growing season
208 days
Hardiness zone
6b
Explore more for St. Thomas, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Eldon, Mo (16.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.