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

39°F

4°C

Humidity 61%
Wind Speed S 9 mph
Barometer 30.39 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 24 Mar 12:55 pm EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 44. Southwest wind around 14 mph, with gusts as high as 20 mph.

    High: 44 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50. South wind 6 to 9 mph.

    High: 50 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. South wind around 7 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely after 2pm. Mostly cloudy, with a high near 61. South southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Partly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Showers
    Likely

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 31.

    High: 31 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 44. Southwest wind around 14 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 31. South wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 50. South wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 42. South wind around 7 mph.
Thursday
Showers likely after 2pm. Mostly cloudy, with a high near 61. South southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 21.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 50.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 54.
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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:
9:49 am EDT Mar 24, 2026
Forecast Valid:
12pm EDT Mar 24, 2026-6pm EDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation