St. Joseph, MO Weather & Growing Conditions
This Afternoon
57°F
Mostly Cloudy
Mostly cloudy, with a high near 57. West wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Mostly Cloudy | 12 mph W | 3% |
| Tonight | 40°F | Partly Cloudy | 7 mph W | 3% |
| Thursday | 55°F | Partly Sunny | 6 to 10 mph NW | 14% |
| Thursday Night | 39°F | Mostly Cloudy | 3 to 7 mph NNW | 3% |
| Friday | 52°F | Partly Sunny | 6 mph N | 4% |
| Friday Night | 32°F | Mostly Cloudy | 2 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 2 mph SW | 0% |
| Saturday Night | 34°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 64°F | Sunny | 0 to 3 mph WSW | 0% |
| Sunday Night | 37°F | Clear | 2 mph SSW | 0% |
| Monday | 69°F | Sunny | 2 to 9 mph SSW | 0% |
| Monday Night | 41°F | Clear | 1 to 6 mph SW | 0% |
| Tuesday | 68°F | Sunny | 1 to 5 mph NW | 2% |
| Tuesday Night | 43°F | Mostly Clear | 2 mph ENE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Joseph, MO
Last spring frost
Apr 19
First fall frost
Oct 17
Growing season
180 days
Hardiness zone
6a
Explore more for St. Joseph, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, St Joseph Rosecrans Ap, Mo (5.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.