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.

Drizzle

41°F

5°C

Humidity 76%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 34°F (1°C)
Visibility 7.00 mi
Last update 20 Mar 9:15 am EDT
Extended Forecast for

Port Huron MI

  • Today

    Today: Showers likely, mainly before 11am. Mostly cloudy, with a high near 55. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Showers
    Likely then
    Scattered
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. North wind 3 to 8 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 46. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38. South southeast wind around 7 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 8am. Mostly cloudy, with a high near 50. Southwest wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    High: 50 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain before 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Rain

  • Monday

    Monday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

Detailed Forecast

Today
Showers likely, mainly before 11am. Mostly cloudy, with a high near 55. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 33. North wind 3 to 8 mph.
Saturday
Partly sunny, with a high near 46. Calm wind becoming south southeast around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 38. South southeast wind around 7 mph.
Sunday
A chance of rain after 8am. Mostly cloudy, with a high near 50. Southwest wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
A chance of rain before 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 30.
Thursday
A chance of rain. Partly sunny, with a high near 51.
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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:
6:13 am EDT Mar 20, 2026
Forecast Valid:
9am EDT Mar 20, 2026-6pm EDT Mar 26, 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