National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

45°F

7°C

Humidity 76%
Wind Speed W 5 mph
Barometer 29.92 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 May 11:35 pm EDT
Extended Forecast for

4 Miles S Port Sanilac MI

  • Tonight

    Tonight: A chance of showers, mainly between 1am and 2am. Mostly cloudy, with a steady temperature around 45. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 55. North wind around 17 mph, with gusts as high as 26 mph.

    High: 55 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. North wind 5 to 7 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 68. South wind 5 to 13 mph, with gusts as high as 18 mph.

    High: 68 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 30%.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Partly cloudy, with a low around 49. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers, mainly between 1am and 2am. Mostly cloudy, with a steady temperature around 45. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 55. North wind around 17 mph, with gusts as high as 26 mph.
Thursday Night
Mostly clear, with a low around 41. North wind 5 to 7 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 68. South wind 5 to 13 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 52. South wind around 11 mph, with gusts as high as 20 mph.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
Saturday Night
A chance of showers before 2am. Partly cloudy, with a low around 49. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 82.
Monday Night
A chance of showers. Partly cloudy, with a low around 62.
Tuesday
Showers likely. Partly sunny, with a high near 81.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 52.
Wednesday
A chance of showers. Partly sunny, with a high near 66.
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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:
9:49 pm EDT May 13, 2026
Forecast Valid:
11pm EDT May 13, 2026-6pm EDT May 20, 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