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.

Fair

63°F

17°C

Humidity 83%
Wind Speed Calm
Barometer 29.82 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 May 12:15 am EDT
Extended Forecast for

Fort Gratiot MI

  • Overnight

    Overnight: A slight chance of showers before 2am. Mostly cloudy, with a low around 56. South southeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 76. South southeast wind 6 to 10 mph.

    High: 76 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Showers, with thunderstorms also possible after 11pm. Low around 61. South southeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers

  • Friday

    Friday: Sunny, with a high near 81. Southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 57. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before 8am. Partly sunny, with a high near 67. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers before 2am. Mostly cloudy, with a low around 56. South southeast wind around 6 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 76. South southeast wind 6 to 10 mph.
Thursday Night
Showers, with thunderstorms also possible after 11pm. Low around 61. South southeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 81. Southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 57. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, mainly before 8am. Partly sunny, with a high near 67. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A chance of showers. Mostly sunny, with a high near 60.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 47.
Wednesday
Showers likely. Mostly cloudy, 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:
10:14 pm EDT May 14, 2025
Forecast Valid:
12am EDT May 15, 2025-6pm EDT May 21, 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