St. Thomas, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Thomas, a town in Cole County, Missouri.
This Afternoon
98°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 98. Heat index values as high as 105. Southwest wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for St. Thomas
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Slight Chance Showers And Thunderstorms | 3 mph SW | 24% |
| Tonight | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 mph S | 18% |
| Saturday | 98°F | Partly Sunny | 3 to 7 mph SW | 3% |
| Saturday Night | 72°F | Partly Cloudy | 3 mph SW | 13% |
| Sunday | 92°F | Chance Rain Showers | 5 mph W | 32% |
| Sunday Night | 67°F | Showers And Thunderstorms | 3 mph N | 81% |
| Monday | 78°F | Showers And Thunderstorms | 6 mph N | 81% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 6 mph N | 35% |
| Tuesday | 72°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph N | 16% |
| Tuesday Night | 54°F | Mostly Cloudy | 2 to 6 mph NE | 4% |
| Wednesday | 74°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 55°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 76°F | Mostly Sunny | 3 mph NE | 6% |
| Thursday Night | 58°F | Partly Cloudy | 2 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for St. Thomas (38.367, -92.216). Updated through the day.
Growing snapshot for St. Thomas
Last spring frost
Apr 8
First fall frost
Oct 31
Growing season
205 days
Hardiness zone
6b
More local growing data for St. Thomas: nearby ZIP 65076 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jefferson City Wtp, Mo (14.2 mi from St. Thomas). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.