St. Joseph, MO Weather & Growing Conditions
This Afternoon
56°F
Mostly Cloudy
Mostly cloudy, with a high near 56. West wind around 13 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Mostly Cloudy | 13 mph W | 3% |
| Tonight | 41°F | Partly Cloudy | 8 mph W | 3% |
| Thursday | 55°F | Slight Chance Light Rain then Partly Sunny | 7 to 12 mph NW | 15% |
| Thursday Night | 40°F | Mostly Cloudy | 5 to 8 mph NNW | 4% |
| Friday | 52°F | Partly Sunny | 7 mph N | 4% |
| Friday Night | 32°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Saturday | 55°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 34°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 63°F | Sunny | 1 to 5 mph WSW | 0% |
| Sunday Night | 38°F | Clear | 3 mph SSW | 0% |
| Monday | 68°F | Sunny | 3 to 10 mph SSW | 1% |
| Monday Night | 41°F | Clear | 2 to 6 mph SW | 0% |
| Tuesday | 67°F | Sunny | 5 mph NW | 2% |
| Tuesday Night | 43°F | Mostly Clear | 3 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 17
First fall frost
Oct 19
Growing season
184 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, Cosby 2W, Mo (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.