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.

Partly Cloudy

70°F

21°C

Humidity 57%
Wind Speed SW 15 G 23 mph
Barometer 29.92 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 3 Apr 10:56 am EDT
Extended Forecast for

Port Huron MI

  • Today

    Today: Partly sunny, with a temperature falling to around 59 by 5pm. West wind around 15 mph, with gusts as high as 31 mph.

    High: 68 °F⇓

    Partly Sunny

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 39. North wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Partly Cloudy
    then Rain
    Likely

  • Saturday

    Saturday: Rain likely and possibly a thunderstorm before 8am, then rain between 8am and 2pm, then rain and possibly a thunderstorm after 2pm. High near 64. Southeast wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 2am. Low around 37. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 37 °F

    Rain then
    Chance Rain

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

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

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of rain after 2pm. Partly sunny, with a high near 44. Chance of precipitation is 40%.

    High: 44 °F

    Partly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: A chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance
    Rain/Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a temperature falling to around 59 by 5pm. West wind around 15 mph, with gusts as high as 31 mph.
Tonight
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 39. North wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain likely and possibly a thunderstorm before 8am, then rain between 8am and 2pm, then rain and possibly a thunderstorm after 2pm. High near 64. Southeast wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 2am. Low around 37. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly cloudy, with a high near 43. West wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
A chance of rain after 2pm. Partly sunny, with a high near 44. Chance of precipitation is 40%.
Monday Night
A chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 27.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42.
Thursday
A chance of rain. Mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
Last Update:
10:35 am EDT Apr 3, 2026
Forecast Valid:
11am EDT Apr 3, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
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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