St. Joseph, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Joseph, a city in Berrien County, Michigan.
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind around 5 mph.
7-day forecast for St. Joseph
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 5 mph SW | 0% |
| Tonight | 65°F | Partly Cloudy | 5 mph S | 1% |
| Wednesday | 80°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph W | 83% |
| Thursday | 77°F | Showers And Thunderstorms | 5 mph W | 83% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 41% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph SW | 9% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph SE | 6% |
| Saturday | 82°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SW | 26% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 10 mph SW | 26% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 44% |
| Monday | 82°F | Chance Rain Showers | 5 to 10 mph SW | 44% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 51% |
Forecast source: National Weather Service (api.weather.gov) for St. Joseph (42.100, -86.489). Updated through the day.
Growing snapshot for St. Joseph
Last spring frost
May 5
First fall frost
Oct 15
Growing season
161 days
Hardiness zone
6b
More local growing data for St. Joseph: nearby ZIP 49085 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Baroda
Benton Harbor
Benton Heights
Berrien Springs
Bridgman
Buchanan
Coloma
Eau Claire
Fair Plain
Galien
Grand Beach
Lake Michigan Beach
Michiana
Millburg
New Buffalo
New Troy
Niles
Paw Paw Lake
Shoreham
Shorewood-Tower Hills-Harbert
Stevensville
Three Oaks
Watervliet
Climate data from the nearest NOAA station, Benton Harbor Ap, Mi (5.2 mi from St. Joseph). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.