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.

Light Rain

41°F

5°C

Humidity 76%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 34°F (1°C)
Visibility 7.00 mi
Last update 20 Mar 8:55 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Today

    Today: Showers, mainly before 11am. High near 55. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Showers then
    Isolated
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. North wind 5 to 8 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 46. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 46 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. South southeast wind around 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 8am. Mostly cloudy, with a high near 49. West southwest wind 7 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    High: 49 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain before 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Rain

  • Monday

    Monday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Showers, mainly before 11am. High near 55. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 32. North wind 5 to 8 mph.
Saturday
Mostly cloudy, with a high near 46. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 37. South southeast wind around 7 mph.
Sunday
A chance of rain after 8am. Mostly cloudy, with a high near 49. West southwest wind 7 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
A chance of rain before 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 29.
Thursday
A chance of rain. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
Last Update:
6:13 am EDT Mar 20, 2026
Forecast Valid:
9am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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