Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

55°F

13°C

Humidity 88%
Wind Speed SE 3 mph
Barometer 30.19 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 11 Oct 12:55 am EDT
Extended Forecast for

3 Miles NNW Port Huron MI

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. South southeast wind around 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely, mainly before 2pm.  Cloudy, with a high near 66. Southeast wind around 8 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Rain Likely
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Columbus Day

    Columbus Day: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 74. Light southwest wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: A chance of rain and thunderstorms before 2am, then rain likely between 2am and 5am, then rain likely and possibly a thunderstorm after 5am.  Mostly cloudy, with a low around 62. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Rain Likely

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm.  Partly sunny, with a high near 76. Chance of precipitation is 60%.

    High: 76 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely before 8pm.  Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Low: 55 °F

    Rain Likely
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. South southeast wind around 8 mph.
Sunday
Rain likely, mainly before 2pm. Cloudy, with a high near 66. Southeast wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Columbus Day
Patchy fog before 10am. Otherwise, partly sunny, with a high near 74. Light southwest wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
A chance of rain and thunderstorms before 2am, then rain likely between 2am and 5am, then rain likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 62. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Rain likely and possibly a thunderstorm. Partly sunny, with a high near 76. Chance of precipitation is 60%.
Tuesday Night
Rain likely before 8pm. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Wednesday
Mostly cloudy, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 48.
Friday
A chance of rain. Mostly cloudy, with a high near 62.
Friday Night
Mostly cloudy, with a low around 43.
Saturday
Partly sunny, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Port Huron MI
 43.01°N 82.45°W (Elev. 600 ft)
4:24 pm EDT Oct 10, 2026
1am EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database