Saint Charles, MI Weather Forecast
Local 7-day forecast
Mostly Sunny then Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Charles, MI in one place.
Smoke after 2pm. Mostly sunny, with a high near 99. Heat index values as high as 103. West northwest wind 3 to 8 mph, with gusts as high as 18 mph. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Saint Charles, MI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 14, 2026 8:17 PM EDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Saint Charles, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 8:17 PM EDT
- Forecast office
- DTX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Charles
Wednesday looks like the warmest upcoming period in Saint Charles at 99 degrees F.
Monday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 15 mph WNW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 8:17 PM EDT
- Coverage
- 7 days
- Time zone
- America/Detroit
- Forecast office
- DTX
- Radar station
- KDTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Smoke. Partly cloudy, with a low around 66. North wind 2 to 8 mph, with gusts as high as 18 mph. New rainfall amounts less than a tenth of an inch possible.
Smoke before 9am. Sunny, with a high near 92. North northwest wind around 5 mph.
Partly cloudy, with a low around 65. Northeast wind around 5 mph.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Showers and thunderstorms likely. Mostly sunny, with a high near 90.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 65.
Mostly sunny, with a high near 85.
A slight chance of rain showers between 8pm and 2am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 65.
A slight chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Mostly Sunny then Smoke
|
99°F |
3 to 8 mph
WNW
|
|
Wednesday Night
Jul 15
|
Smoke
|
66°F |
2 to 8 mph
N
|
|
Thursday
Jul 16
|
Smoke then Sunny
|
92°F |
5 mph
NNW
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
65°F |
5 mph
NE
|
|
Friday
Jul 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
6 mph
ESE
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
68°F |
7 mph
SSE
|
|
Saturday
Jul 18
|
Showers And Thunderstorms Likely
|
90°F |
5 to 14 mph
WSW
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms Likely
|
65°F |
6 to 13 mph
NW
|
|
Sunday
Jul 19
|
Mostly Sunny
|
85°F |
7 mph
N
|
|
Sunday Night
Jul 19
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
65°F |
6 mph
SSW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
87°F |
6 to 14 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
64°F |
8 to 13 mph
W
|
|
Tuesday
Jul 21
|
Chance Rain Showers
|
81°F |
10 to 15 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Charles.