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

48°F

9°C

Humidity 82%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 25 Apr 1:15 am EDT
Extended Forecast for

Fort Gratiot MI

  • Overnight

    Overnight: Mostly cloudy, with a low around 45. North northeast wind around 7 mph.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Showers and possibly a thunderstorm after noon. High near 70. East southeast wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Mostly Cloudy
    then Showers

  • Friday Night

    Friday Night: Showers likely, mainly before midnight. Cloudy, with a low around 43. North northwest wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 50. Breezy, with a north wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 50 °F

    Mostly Cloudy
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain after 2am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 45. North northeast wind around 7 mph.
Friday
Showers and possibly a thunderstorm after noon. High near 70. East southeast wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely, mainly before midnight. Cloudy, with a low around 43. North northwest wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Partly sunny, with a high near 50. Breezy, with a north wind 15 to 18 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 38. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 68.
Monday Night
A chance of rain after 2am. Mostly cloudy, with a low around 57.
Tuesday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 79. Breezy.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Gratiot MI
 43.08°N 82.5°W (Elev. 623 ft)
Last Update:
4:24 pm EDT Apr 24, 2025
Forecast Valid:
1am EDT Apr 25, 2025-6pm EDT May 1, 2025
 
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