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.

Fair

52°F

11°C

Humidity 54%
Wind Speed S 13 mph
Barometer 29.82 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 27 Feb 4:55 pm EST
Extended Forecast for

2 Miles S Fort Gratiot MI

  • This Afternoon

    This Afternoon: Sunny, with a high near 50. South southwest wind around 10 mph, with gusts as high as 21 mph.

    High: 50 °F

    Sunny

  • Tonight

    Tonight: A chance of sprinkles before 11pm, then a slight chance of rain between 11pm and 1am. Increasing clouds, with a low around 29. South wind around 11 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Increasing clouds, with a temperature falling to around 28 by 5pm. Northwest wind 7 to 9 mph becoming north northeast in the afternoon.

    High: 34 °F⇓

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Snow likely between 7pm and 1am. Mostly cloudy, with a low around 18. North wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 18 °F

    Snow Likely

  • Sunday

    Sunday: Partly sunny, with a high near 23. North wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 23 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 29.

    High: 29 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 19.

    Low: 19 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 38.

    High: 38 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 50. South southwest wind around 10 mph, with gusts as high as 21 mph.
Tonight
A chance of sprinkles before 11pm, then a slight chance of rain between 11pm and 1am. Increasing clouds, with a low around 29. South wind around 11 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Saturday
Increasing clouds, with a temperature falling to around 28 by 5pm. Northwest wind 7 to 9 mph becoming north northeast in the afternoon.
Saturday Night
Snow likely between 7pm and 1am. Mostly cloudy, with a low around 18. North wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Sunday
Partly sunny, with a high near 23. North wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 10.
Monday
Partly sunny, then gradually becoming sunny, with a high near 29.
Monday Night
Increasing clouds, with a low around 19.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 38.
Tuesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 31.
Thursday
Rain likely. Mostly cloudy, with a high near 45.
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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:
3:36 pm EST Feb 27, 2026
Forecast Valid:
4pm EST Feb 27, 2026-6pm EST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation