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

23°C

73°F

Humidity 94%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 22°C (72°F)
Visibility 16 km
Last update 13 Jul 12:15 am EDT
Extended Forecast for

Fort Gratiot MI

  • Overnight

    Overnight: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 20. West southwest wind around 8 km/h. Chance of precipitation is 20%.

    Low: 20 °C

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 28. West wind 8 to 11 km/h.

    High: 28 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Calm wind becoming west 5 to 10 km/h after midnight.

    Low: 17 °C

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 29. West southwest wind 8 to 11 km/h.

    High: 29 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. Southwest wind 5 to 8 km/h.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 31.

    High: 31 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21.

    Low: 21 °C

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 20.

    Low: 20 °C

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 20. West southwest wind around 8 km/h. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 28. West wind 8 to 11 km/h.
Sunday Night
Partly cloudy, with a low around 17. Calm wind becoming west 5 to 10 km/h after midnight.
Monday
Sunny, with a high near 29. West southwest wind 8 to 11 km/h.
Monday Night
Mostly clear, with a low around 19. Southwest wind 5 to 8 km/h.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 20.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 27.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 24.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 26.
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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 m)
Last Update:
10:14 pm EDT Jul 12, 2025
Forecast Valid:
12am EDT Jul 13, 2025-6pm EDT Jul 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