Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Light Rain

70°F

21°C

Humidity 88%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 21 Jun 9:56 am 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
  • Today

    Today: Showers likely and possibly a thunderstorm before 11am, then a slight chance of showers between 11am and 2pm.  Partly sunny, with a high near 88. South wind 9 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Tonight

    Tonight: 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 102. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 74. Southwest wind around 7 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 94. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    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. Chance of precipitation is 40%.

    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 between 8pm and 2am.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 11am, then a slight chance of showers between 11am and 2pm. Partly sunny, with a high near 88. South wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
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 102. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 74. Southwest wind around 7 mph.
Monday
Sunny and hot, with a high near 94. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.
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. Chance of precipitation is 40%.
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 62.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
Showers likely. Mostly cloudy, with a low around 67.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
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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 am EDT Jun 21, 2025
10am EDT Jun 21, 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