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.

Fog

34°F

1°C

Humidity 93%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 32°F (0°C)
Visibility 0.25 mi
Last update 16 Feb 11:55 pm EST
Extended Forecast for

Port Huron MI

  • Overnight

    Overnight: A slight chance of rain before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 32. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 43. Light and variable wind becoming east northeast around 5 mph in the afternoon.

    High: 43 °F

    Areas Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely after 1am. Patchy fog between 8pm and 1am. Otherwise, cloudy, with a low around 34. East southeast wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Patchy Fog
    then Rain
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Rain, mainly before 3pm. High near 48. Southeast wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. West southwest wind around 6 mph becoming southeast after midnight.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 43.

    High: 43 °F

    Rain Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of rain before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 32. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 20%.
Tuesday
Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 43. Light and variable wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Rain likely after 1am. Patchy fog between 8pm and 1am. Otherwise, cloudy, with a low around 34. East southeast wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain, mainly before 3pm. High near 48. Southeast wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Partly cloudy, with a low around 32. West southwest wind around 6 mph becoming southeast after midnight.
Thursday
Partly sunny, with a high near 45.
Thursday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 43.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Mostly cloudy, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
A chance of snow. Partly sunny, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 27.
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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:
11:49 pm EST Feb 16, 2026
Forecast Valid:
12am EST Feb 17, 2026-6pm EST Feb 23, 2026
 
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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