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

59°F

15°C

Humidity 77%
Wind Speed N 6 mph
Barometer 30.09 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 13 Jun 8:55 pm EDT
Extended Forecast for

Fort Gratiot MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East northeast wind 6 to 8 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 69. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Northeast wind 5 to 8 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. Northeast wind 6 to 9 mph.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. North northeast wind 5 to 7 mph becoming calm after midnight.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. East northeast wind 6 to 8 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 69. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 54. Northeast wind 5 to 8 mph.
Sunday
Sunny, with a high near 71. Northeast wind 6 to 9 mph.
Sunday Night
Partly cloudy, with a low around 56. North northeast wind 5 to 7 mph becoming calm after midnight.
Monday
Partly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 62.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65.
Juneteenth
A chance of showers and thunderstorms. Partly sunny, with a high near 76.
Thursday Night
A chance of thunderstorms. Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Gratiot MI
 43.08°N 82.5°W (Elev. 623 ft)
Last Update:
4:24 pm EDT Jun 13, 2025
Forecast Valid:
9pm EDT Jun 13, 2025-6pm EDT Jun 20, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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