Saint Joseph County, MI Weather Forecast
County weather hub
Showers And Thunderstorms
Compare major city weather across Saint Joseph County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms. Mostly cloudy, with a high near 62. West wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Saint Joseph County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Saint Joseph County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 18 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 7:44 PM EDT
- Forecast office
- IWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Joseph County
Tuesday looks like the warmest upcoming period in Saint Joseph County at 70 degrees F.
Sunday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph W.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 7:44 PM EDT
- Coverage
- 5 days
- Time zone
- America/Detroit
- Forecast office
- IWX
- Radar station
- KIWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 35. Chance of precipitation is 20%.
Sunny, with a high near 47.
Mostly clear, with a low around 30.
Sunny, with a high near 53.
Partly cloudy, with a low around 42.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 69.
Mostly clear, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
62°F |
15 to 20 mph
W
|
|
Saturday Night
Apr 18
|
Slight Chance Rain Showers then Partly Cloudy
|
35°F |
10 to 15 mph
W
|
|
Sunday
Apr 19
|
Sunny
|
47°F |
10 to 20 mph
W
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
30°F |
5 to 15 mph
NW
|
|
Monday
Apr 20
|
Sunny
|
53°F |
5 to 10 mph
NW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
42°F |
5 to 10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
70°F |
15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
49°F |
10 to 15 mph
W
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
69°F |
5 to 10 mph
NW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
47°F |
5 to 10 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Saint Joseph County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Saint Joseph County.
Largest mapped city population in this region: 7,600.
