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

68°F

20°C

Humidity 83%
Wind Speed N 9 mph
Barometer 29.83 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 2 Aug 9:55 pm EDT
Extended Forecast for

3 Miles N Fort Gratiot MI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 60. North wind 11 to 16 mph, with gusts as high as 24 mph.

    Low: 60 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 74. North wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. North northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Light and variable wind becoming south southeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. South southeast wind around 7 mph.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 77.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. North wind 11 to 16 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 74. North wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 56. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 80. Light and variable wind becoming south southeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 62. South southeast wind around 7 mph.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 77.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Fort Gratiot MI
 43.12°N 82.5°W (Elev. 600 ft)
Last Update:
4:24 pm EDT Aug 2, 2026
Forecast Valid:
10pm EDT Aug 2, 2026-6pm EDT Aug 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation