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.

Partly Cloudy

68°F

20°C

Humidity 38%
Wind Speed S 6 mph
Barometer 29.86 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Apr 6:15 pm EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Tonight

    Tonight: A chance of showers before 10pm. Mostly cloudy, with a low around 41. South southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.

    Low: 41 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 56. North northeast wind around 7 mph.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38. North northeast wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 66. Southeast wind 3 to 7 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. Southeast wind around 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers after 2pm. Mostly sunny, with a high near 63. Chance of precipitation is 40%.

    High: 63 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 2pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers before 10pm. Mostly cloudy, with a low around 41. South southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 56. North northeast wind around 7 mph.
Wednesday Night
Mostly clear, with a low around 38. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 66. Southeast wind 3 to 7 mph.
Thursday Night
Partly cloudy, with a low around 47. Southeast wind around 6 mph.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 63. Chance of precipitation is 40%.
Friday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Saturday
A chance of showers before 2pm. Mostly cloudy, with a high near 53.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 42.
Monday
A chance of showers. Mostly sunny, with a high near 64.
Monday Night
A chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63.
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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:
4:24 pm EDT Apr 21, 2026
Forecast Valid:
6pm EDT Apr 21, 2026-6pm EDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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