Saint Joseph County, MI Weather Forecast
County weather hub
Sunny
Compare major city weather across Saint Joseph County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 90.
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
- Jul 17 to Jul 19, 2026
- Latest sync
- Jul 13, 2026 1:50 PM EDT
- Forecast office
- IWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Joseph County
Friday looks like the warmest upcoming period in Saint Joseph County at 90 degrees F.
Sunday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 13, 2026 1:50 PM EDT
- Coverage
- 3 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 chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67.
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85.
A chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Sunny
|
90°F |
5 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
70°F |
5 to 10 mph
SW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
88°F |
10 to 15 mph
SW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
67°F |
10 to 15 mph
SW
|
|
Sunday
Jul 19
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
85°F |
10 to 15 mph
SW
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
SW
|
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.
