St. Thomas, MO Weather & Growing Conditions
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Southwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 7 mph SW | 0% |
| Tonight | 71°F | Partly Cloudy | 3 mph SW | 4% |
| Sunday | 92°F | Slight Chance Rain Showers then Partly Sunny | 3 mph W | 23% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 3 mph N | 76% |
| Monday | 79°F | Showers And Thunderstorms | 2 to 6 mph N | 76% |
| Monday Night | 60°F | Chance Rain Showers then Mostly Cloudy | 2 to 6 mph N | 26% |
| Tuesday | 72°F | Partly Sunny | 6 mph N | 8% |
| Tuesday Night | 54°F | Partly Cloudy | 2 to 6 mph N | 1% |
| Wednesday | 75°F | Mostly Sunny | 5 mph NE | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 3 mph NE | 1% |
| Thursday | 77°F | Mostly Sunny | 0 to 3 mph NE | 4% |
| Thursday Night | 59°F | Mostly Cloudy | 2 mph NE | 9% |
| Friday | 80°F | Slight Chance Rain Showers | 0 to 3 mph NE | 19% |
| Friday Night | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph NE | 18% |
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 Sep 19, 2026.