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

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

52°F

11°C

Humidity 94%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jul 7:15 am EDT
Extended Forecast for

Marine City MI

  • Today

    Today: Sunny, with a high near 77. Calm wind becoming north northwest around 5 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 77. Calm wind becoming north northwest around 5 mph.
Tonight
Mostly clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 80. Calm wind becoming south southeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58. Light and variable wind.
Saturday
Sunny, with a high near 83. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Partly cloudy, with a low around 67.
Monday
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 87.
Monday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Partly cloudy, with a low around 66.
Tuesday
A chance of showers. Mostly sunny, with a high near 81.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 61.
Wednesday
Sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marine City MI
 42.71°N 82.52°W (Elev. 591 ft)
Last Update:
4:24 am EDT Jul 23, 2026
Forecast Valid:
7am EDT Jul 23, 2026-6pm EDT Jul 29, 2026
 
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