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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Fort Gratiot MI

  • Tonight

    Tonight: A chance of showers before 1am, then a chance of rain after 5am. Mostly cloudy, with a low around 40. North northwest wind 3 to 6 mph. Chance of precipitation is 50%.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain likely before 3pm, then a chance of rain after 4pm. Cloudy, with a high near 45. Breezy, with a north northeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Rain Likely
    then Chance
    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely before 1am, then rain and snow. Low around 32. Breezy, with a north wind 9 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain Likely
    and Breezy
    then
    Rain/Snow

  • Friday

    Friday: Rain and snow, becoming all rain after 10am. High near 41. North wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    then Rain

  • Friday Night

    Friday Night: Rain likely before 10pm, then rain and snow likely between 10pm and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 30. Northwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: A chance of rain after 7am. Partly sunny, with a high near 44. Chance of precipitation is 40%.

    High: 44 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers before 1am, then a chance of rain after 5am. Mostly cloudy, with a low around 40. North northwest wind 3 to 6 mph. Chance of precipitation is 50%.
Thursday
Rain likely before 3pm, then a chance of rain after 4pm. Cloudy, with a high near 45. Breezy, with a north northeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely before 1am, then rain and snow. Low around 32. Breezy, with a north wind 9 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday
Rain and snow, becoming all rain after 10am. High near 41. North wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Friday Night
Rain likely before 10pm, then rain and snow likely between 10pm and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 30. Northwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A chance of rain after 7am. Partly sunny, with a high near 44. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 45.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Gratiot MI
 43.08°N 82.5°W (Elev. 623 ft)
Last Update:
3:49 pm EST Nov 11, 2026
Forecast Valid:
6pm EST Nov 11, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation