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

50°F

10°C

Humidity 22%
Wind Speed NE 7 mph
Barometer 30.43 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 11 Apr 5:15 pm EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Tonight

    Tonight: A chance of showers, mainly after 5am. Increasing clouds, with a low around 36. East northeast wind around 5 mph becoming light and variable. Chance of precipitation is 30%.

    Low: 36 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely before 4pm, then a slight chance of showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 66. South wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Southwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. West southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 56. South southwest wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm, then showers after 2am. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: Showers, mainly before 8am. Mostly cloudy, with a high near 71.

    High: 71 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers, mainly after 5am. Increasing clouds, with a low around 36. East northeast wind around 5 mph becoming light and variable. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely before 4pm, then a slight chance of showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 66. South wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Southwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 70. West southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A chance of showers, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 56. South southwest wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm, then showers after 2am. Low around 57. Chance of precipitation is 80%.
Wednesday
Showers, mainly before 8am. Mostly cloudy, with a high near 71.
Wednesday Night
Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 53.
Thursday
A chance of showers. Mostly cloudy, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 70.
Friday Night
A chance of showers. Mostly cloudy, with a low around 49.
Saturday
A chance of showers. Mostly cloudy, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
Last Update:
4:24 pm EDT Apr 11, 2026
Forecast Valid:
5pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026
 
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