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

70°F

21°C

Humidity 83%
Wind Speed N 7 mph
Barometer 29.79 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 2 Aug 7:35 pm EDT
Extended Forecast for

4 Miles S Port Sanilac MI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Breezy, with a north wind 10 to 20 mph, with gusts as high as 29 mph.

    Low: 60 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 75. North wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. North northeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. Southwest wind 5 to 8 mph becoming south southeast in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. South southwest wind 6 to 8 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 2am. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Breezy, with a north wind 10 to 20 mph, with gusts as high as 29 mph.
Monday
Sunny, with a high near 75. North wind 11 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 58. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 82. Southwest wind 5 to 8 mph becoming south southeast in the afternoon.
Tuesday Night
Mostly clear, with a low around 63. South southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 84.
Wednesday Night
A chance of showers after 2am. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 78.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A chance of showers. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Port Sanilac MI
 43.37°N 82.56°W (Elev. 650 ft)
Last Update:
4:24 pm EDT Aug 2, 2026
Forecast Valid:
7pm EDT Aug 2, 2026-6pm EDT Aug 9, 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