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.

Overcast

73°F

23°C

Humidity 65%
Wind Speed SE 8 mph
Barometer 29.83 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 14 May 2:36 pm EDT
Extended Forecast for

Fort Gratiot MI

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 71. Southeast wind around 8 mph. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

  • Tonight

    Tonight: 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: Partly sunny, with a high near 75. South wind 5 to 10 mph.

    High: 75 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 61. South southeast wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers

  • Friday

    Friday: Showers before 8am. High near 81. Southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Showers then
    Sunny

  • Friday Night

    Friday Night: Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Increasing clouds, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 40%.

    High: 70 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 71. Southeast wind around 8 mph. Chance of precipitation is 30%.
Tonight
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
Partly sunny, with a high near 75. South wind 5 to 10 mph.
Thursday Night
Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 61. South southeast wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers before 8am. High near 81. Southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Increasing clouds, with a low around 58. Chance of precipitation is 70%.
Saturday
A chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A chance of showers. Partly sunny, with a high near 61.
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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:
1:52 pm EDT May 14, 2025
Forecast Valid:
3pm EDT May 14, 2025-6pm EDT May 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