Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fog/Mist

64°F

18°C

Humidity 94%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 63°F (17°C)
Visibility 5.00 mi
Last update 20 Jun 11:35 pm EDT
Extended Forecast for

3 Miles WNW 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
  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then showers likely between 4am and 5am, then showers likely and possibly a thunderstorm after 5am.  Mostly cloudy, with a low around 65. South wind around 6 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 11am.  Cloudy through mid morning, then gradual clearing, with a high near 88. South wind 7 to 15 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: 88 °F

    Showers
    Likely then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southwest wind 11 to 13 mph, with gusts as high as 24 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Southwest wind around 8 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • 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 86.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

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

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 4am, then showers likely between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 65. South wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 88. South wind 7 to 15 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 76. Southwest wind 11 to 13 mph, with gusts as high as 24 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 74. Southwest wind around 8 mph.
Monday
Sunny and hot, with a high near 94.
Monday Night
Mostly clear, with a low around 72.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Partly cloudy, with a low around 64.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83.
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 83.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Port Huron MI
 42.99°N 82.49°W (Elev. 627 ft)
4:24 pm EDT Jun 20, 2025
11pm EDT Jun 20, 2025-6pm EDT Jun 27, 2025
 
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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