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.

Mostly Cloudy

81°F

27°C

Humidity 62%
Wind Speed S 8 mph
Barometer 29.83 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 12 Aug 2:35 pm EDT
Extended Forecast for

Port Huron MI

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 81. West southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 64. Light north northwest wind. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, increasing clouds, with a high near 81. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 81. West southwest wind around 5 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 11pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 64. Light north northwest wind. Chance of precipitation is 40%.
Thursday
Patchy fog before 9am. Otherwise, increasing clouds, with a high near 81. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 81. East northeast wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 64.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
Last Update:
2:24 pm EDT Aug 12, 2026
Forecast Valid:
2pm EDT Aug 12, 2026-6pm EDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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