St. Joseph, MO Weather & Growing Conditions
Today
57°F
Mostly Cloudy
Mostly cloudy, with a high near 57. West wind 9 to 13 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Mostly Cloudy | 9 to 13 mph W | 2% |
| Tonight | 42°F | Partly Cloudy | 7 mph W | 1% |
| Thursday | 56°F | Mostly Sunny | 6 to 10 mph WNW | 4% |
| Thursday Night | 43°F | Mostly Cloudy | 7 mph NNW | 4% |
| Friday | 55°F | Partly Sunny | 6 mph N | 2% |
| Friday Night | 35°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Saturday | 56°F | Mostly Sunny | 2 mph SSW | 0% |
| Saturday Night | 37°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 63°F | Sunny | 1 to 5 mph W | 0% |
| Sunday Night | 40°F | Clear | 2 mph SSW | 0% |
| Monday | 68°F | Sunny | 2 to 8 mph SSW | 0% |
| Monday Night | 43°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 68°F | Sunny | 5 mph N | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph ESE | 1% |
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 (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.