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

72°F

22°C

Humidity 88%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 68°F (20°C)
Visibility 7.00 mi
Last update 13 Jul 10:35 pm EDT
Extended Forecast for

Fort Gratiot MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Light and variable wind becoming southwest around 5 mph after midnight.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. West northwest wind around 7 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. South wind around 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84.

    High: 84 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 64. Light and variable wind becoming southwest around 5 mph after midnight.
Monday
Sunny, with a high near 83. West northwest wind around 7 mph.
Monday Night
Mostly clear, with a low around 66. Calm wind.
Tuesday
Sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 68. South wind around 5 mph.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 65.
Friday
A chance of showers. Partly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers. Mostly sunny, with a high near 79.
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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:
10:14 pm EDT Jul 13, 2025
Forecast Valid:
10pm EDT Jul 13, 2025-6pm EDT Jul 20, 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