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.

Overcast

25°F

-4°C

Humidity 39%
Wind Speed W 7 mph
Barometer 30.10 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 17 Mar 5:55 pm EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Tonight

    Tonight: A slight chance of snow showers before 11pm. Mostly cloudy, with a low around 18. West wind 5 to 8 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 18 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A slight chance of snow showers after 9am. Mostly cloudy, with a high near 35. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a steady temperature around 34. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain after 8am. Mostly cloudy, with a high near 42. South southwest wind around 7 mph. Chance of precipitation is 50%.

    High: 42 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. North northwest wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain before 8pm. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow showers before 11pm. Mostly cloudy, with a low around 18. West wind 5 to 8 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of snow showers after 9am. Mostly cloudy, with a high near 35. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a steady temperature around 34. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Thursday
A chance of rain after 8am. Mostly cloudy, with a high near 42. South southwest wind around 7 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 32. North northwest wind 3 to 5 mph.
Friday
A chance of rain after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
A chance of rain between 8am and 2pm. Partly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 42.
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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:
4:24 pm EDT Mar 17, 2026
Forecast Valid:
6pm EDT Mar 17, 2026-6pm EDT Mar 24, 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