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

32°F

0°C

Humidity 64%
Wind Speed S 8 mph
Barometer 30.11 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 18 Mar 10:15 pm EDT
Extended Forecast for

Port Huron MI

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 34 by 3am. South wind 6 to 8 mph.

    Low: 31 °F⇑

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 45. Light and variable wind becoming north northwest around 5 mph in the afternoon.

    High: 45 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 33. Light and variable wind.

    Low: 33 °F

    Increasing
    Clouds

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 51. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 8pm. Mostly cloudy, with a low around 35. North northwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain between 8am and 2pm. Mostly cloudy, with a high near 48.

    High: 48 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 34 by 3am. South wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 45. Light and variable wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 33. Light and variable wind.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 51. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 35. North northwest wind around 6 mph. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
A chance of rain between 8am and 2pm. Mostly cloudy, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 45.
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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:
7:13 pm EDT Mar 18, 2026
Forecast Valid:
10pm EDT Mar 18, 2026-6pm EDT Mar 25, 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