Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Mostly Cloudy

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Jun 4:35 am EDT
Extended Forecast for

4 Miles N Port Huron MI

Extreme Heat Watch June 22, 08:00am until June 24, 08:00pm
Heat Advisory June 21, 02:00pm until June 22, 08:00am
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  • Overnight

    Overnight: A slight chance of showers, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 66. South wind around 7 mph.  Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am.  Partly sunny, with a high near 86. South wind 8 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 86 °F

    Showers
    Likely then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Heat index values as high as 100. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. Southwest wind around 9 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.  Partly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. South wind around 7 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am. Partly sunny, with a high near 86. South wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Mostly clear, with a low around 77. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 92. Heat index values as high as 100. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 74. Southwest wind around 9 mph.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 72.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 64.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Thursday Night
Showers likely. Mostly cloudy, with a low around 67.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Port Huron MI
 43.03°N 82.45°W (Elev. 597 ft)
4:24 am EDT Jun 21, 2025
4am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database