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

54°F

12°C

Humidity 77%
Wind Speed Calm
Barometer 29.84 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 10 Mar 5:15 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Today

    Today: A chance of rain between 8am and 3pm. Mostly cloudy, with a temperature rising to near 51 by 10am, then falling to around 39 during the remainder of the day. South southwest wind 5 to 9 mph becoming north northeast in the morning. Chance of precipitation is 50%.

    High: 51 °F⇓

    Chance Rain

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Temperature falling to near 37 by 8pm, then rising to around 47 during the remainder of the night. North northeast wind 5 to 8 mph becoming east southeast after midnight. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 37 °F⇑

    Rain Likely
    then Rain

  • Wednesday

    Wednesday: Rain and thunderstorms likely before 8am, then rain and possibly a thunderstorm between 8am and 11am, then rain after 11am. High near 50. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. West northwest wind around 15 mph, with gusts as high as 28 mph.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of snow after 2am. Increasing clouds, with a low around 28. Chance of precipitation is 50%.

    Low: 28 °F

    Partly Cloudy
    then Chance
    Snow

  • Friday

    Friday: Rain likely, possibly mixed with snow, becoming all rain after 8am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 42. Breezy. Chance of precipitation is 60%.

    High: 42 °F

    Breezy.
    Rain/Snow
    Likely then
    Rain Likely

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Breezy.

    Low: 25 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain between 8am and 3pm. Mostly cloudy, with a temperature rising to near 51 by 10am, then falling to around 39 during the remainder of the day. South southwest wind 5 to 9 mph becoming north northeast in the morning. Chance of precipitation is 50%.
Tonight
Rain and possibly a thunderstorm. Temperature falling to near 37 by 8pm, then rising to around 47 during the remainder of the night. North northeast wind 5 to 8 mph becoming east southeast after midnight. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Rain and thunderstorms likely before 8am, then rain and possibly a thunderstorm between 8am and 11am, then rain after 11am. High near 50. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 26. West northwest wind around 15 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 39. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
A chance of snow after 2am. Increasing clouds, with a low around 28. Chance of precipitation is 50%.
Friday
Rain likely, possibly mixed with snow, becoming all rain after 8am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 42. Breezy. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 25. Breezy.
Saturday
Mostly cloudy, with a high near 36.
Saturday Night
A chance of snow between 8pm and 2am, then rain and snow likely. Cloudy, with a low around 29.
Sunday
Rain and snow. Cloudy, with a high near 44.
Sunday Night
Rain and snow. Cloudy, with a low around 20.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 26.
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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 am EDT Mar 10, 2026
Forecast Valid:
5am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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