Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

34°F

1°C

Humidity 87%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 21 Mar 7:56 am EDT
Extended Forecast for

Port Huron MI

  • Today

    Today: Mostly cloudy, with a high near 47. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 47 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South southeast wind around 7 mph.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly before 2pm.  Mostly cloudy, with a temperature rising to near 46 by 11am, then falling to around 38 during the remainder of the day. North wind 5 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm.  Mostly cloudy, with a low around 30. North wind 9 to 13 mph, with gusts as high as 23 mph.  Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. North wind around 10 mph, with gusts as high as 18 mph.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 47. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 40. South southeast wind around 7 mph.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a temperature rising to near 46 by 11am, then falling to around 38 during the remainder of the day. North wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 30. North wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 36. North wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 24.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
A chance of rain. Mostly cloudy, with a high near 54.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 28.
Friday
Mostly cloudy, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
4:24 am EDT Mar 21, 2026
8am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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