St. Joseph, MN Weather & Growing Conditions
Tonight
54°F
Rain Showers Likely
Rain showers likely and patchy fog before 1am, then a chance of drizzle between 1am and 4am. Cloudy, with a low around 54. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain Showers Likely | 10 to 15 mph E | 62% |
| Saturday | 64°F | Cloudy | 10 mph NE | 11% |
| Saturday Night | 51°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Sunday | 67°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 47°F | Cloudy | 5 to 10 mph ENE | 3% |
| Monday | 63°F | Mostly Cloudy | 5 to 10 mph ENE | 7% |
| Monday Night | 43°F | Partly Cloudy | 0 to 5 mph E | 4% |
| Tuesday | 64°F | Mostly Sunny | 0 to 10 mph E | 2% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Mostly Sunny | 0 to 10 mph SE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 5 mph SSE | 12% |
| Thursday | 69°F | Partly Sunny | 0 to 5 mph SSE | 13% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph SSE | 6% |
| Friday | 71°F | Mostly Sunny | 0 to 10 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Joseph, MN
Last spring frost
May 3
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
4b
Explore more for St. Joseph, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Collegeville St John's, Mn (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.