St. Thomas, MO Weather & Growing Conditions
Today
92°F
Sunny
Sunny, with a high near 92. South wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 7 mph S | 0% |
| Tonight | 72°F | Mostly Clear | 2 to 6 mph SE | 2% |
| Wednesday | 94°F | Mostly Sunny then Scattered Showers And Thunderstorms | 3 mph S | 31% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms | 3 mph SE | 69% |
| Thursday | 90°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 mph S | 69% |
| Thursday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph S | 19% |
| Friday | 90°F | Slight Chance Showers And Thunderstorms | 2 mph SW | 21% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 2 mph S | 25% |
| Saturday | 93°F | Chance Showers And Thunderstorms then Sunny | 3 mph SW | 25% |
| Saturday Night | 74°F | Mostly Clear | 3 mph S | 5% |
| Sunday | 95°F | Sunny | 6 mph SW | 4% |
| Sunday Night | 75°F | Mostly Clear | 5 mph S | 2% |
| Monday | 96°F | Sunny | 7 mph SW | 2% |
| Monday Night | 76°F | Mostly Clear | 5 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Thomas, MO
Last spring frost
Apr 8
First fall frost
Oct 31
Growing season
205 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, Jefferson City Wtp, Mo (14.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.