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.

Partly Cloudy

66°F

19°C

Humidity 88%
Wind Speed SE 7 mph
Barometer 29.98 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 May 9:15 am EDT
Extended Forecast for

Fort Gratiot MI

  • Today

    Today: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. East southeast wind 7 to 10 mph. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 2am. Mostly cloudy, with a low around 56. East southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly cloudy, with a high near 71. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 71 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 56. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75. South wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, with thunderstorms also possible after 11pm. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Friday

    Friday: Showers likely before 8am. Sunny, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely then
    Sunny

  • Friday Night

    Friday Night: A chance of showers after 8pm. Partly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. East southeast wind 7 to 10 mph. Chance of precipitation is 30%.
Tonight
A chance of showers before 2am. Mostly cloudy, with a low around 56. East southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers after 2pm. Mostly cloudy, with a high near 71. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 56. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 75. South wind 5 to 10 mph.
Thursday Night
Showers, with thunderstorms also possible after 11pm. Low around 61. Chance of precipitation is 80%.
Friday
Showers likely before 8am. Sunny, with a high near 79. Chance of precipitation is 60%.
Friday Night
A chance of showers after 8pm. Partly cloudy, with a low around 57.
Saturday
A chance of showers. Partly sunny, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Gratiot MI
 43.08°N 82.5°W (Elev. 623 ft)
Last Update:
4:24 am EDT May 13, 2025
Forecast Valid:
9am EDT May 13, 2025-6pm EDT May 19, 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