National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair and Breezy

86°F

30°C

Humidity 62%
Wind Speed S 25 G 31 mph
Barometer 29.85 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 21 Jun 5:35 pm EDT
Extended Forecast for

Marine City MI

Heat Advisory June 21, 05:43pm until June 24, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 21, 05:43pm until June 24, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 96. Heat index values as high as 105. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 96 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 74. South southwest wind 6 to 8 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southwest wind 6 to 8 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Chance of precipitation is 30%.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 76. South southwest wind 8 to 16 mph, with gusts as high as 32 mph.
Sunday
Sunny and hot, with a high near 96. Heat index values as high as 105. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 74. South southwest wind 6 to 8 mph.
Monday
Sunny and hot, with a high near 97. Heat index values as high as 100. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 74. Southwest wind 6 to 8 mph.
Tuesday
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 86.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marine City MI
 42.71°N 82.49°W (Elev. 581 ft)
Last Update:
4:24 pm EDT Jun 21, 2025
Forecast Valid:
5pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation