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.

Fair

81°F

27°C

Humidity 51%
Wind Speed NE 5 mph
Barometer 29.99 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 Aug 12:55 pm EDT
Extended Forecast for

Port Huron MI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 82. North northeast wind around 6 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Calm wind becoming north northeast 5 to 8 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. North northeast wind 3 to 7 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82. South southeast wind 3 to 7 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 82. North northeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 81. Calm wind becoming north northeast 5 to 8 mph in the morning.
Friday Night
Partly cloudy, with a low around 62. North northeast wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 82. South southeast wind 3 to 7 mph.
Saturday Night
A chance of thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Sunday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A chance of showers. Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
Last Update:
10:14 am EDT Aug 13, 2026
Forecast Valid:
12pm EDT Aug 13, 2026-6pm EDT Aug 19, 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