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

37°F

3°C

Humidity 75%
Wind Speed E 5 mph
Barometer 30.22 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 2 Apr 7:16 am EDT
Extended Forecast for

3 Miles SE Fort Gratiot MI

  • Today

    Today: Rain and thunderstorms, mainly before 3pm. High near 55. Southeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Rain then
    Chance Rain

  • Tonight

    Tonight: Rain and thunderstorms before 2am, then a chance of rain. Temperature rising to around 59 by 2am. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F⇑

    Rain and
    Breezy

  • Friday

    Friday: Mostly sunny, with a temperature falling to around 53 by 5pm. Southwest wind around 15 mph, with gusts as high as 26 mph.

    High: 61 °F⇓

    Mostly Sunny

  • Friday Night

    Friday Night: Rain likely after 2am. Mostly cloudy, with a low around 38. North northeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Partly Cloudy
    then Rain
    Likely

  • Saturday

    Saturday: Rain, with thunderstorms also possible after 5pm. High near 62. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 2am. Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Rain then
    Chance Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of rain after 2pm. Partly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Rain and thunderstorms, mainly before 3pm. High near 55. Southeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain and thunderstorms before 2am, then a chance of rain. Temperature rising to around 59 by 2am. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a temperature falling to around 53 by 5pm. Southwest wind around 15 mph, with gusts as high as 26 mph.
Friday Night
Rain likely after 2am. Mostly cloudy, with a low around 38. North northeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain, with thunderstorms also possible after 5pm. High near 62. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 2am. Low around 38. Chance of precipitation is 80%.
Sunday
Mostly cloudy, with a high near 43.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
A chance of rain after 2pm. Partly sunny, with a high near 45.
Monday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Fort Gratiot MI
 43.03°N 82.45°W (Elev. 597 ft)
Last Update:
4:25 am EDT Apr 2, 2026
Forecast Valid:
7am EDT Apr 2, 2026-6pm EDT Apr 8, 2026
 
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