National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

84°F

29°C

Humidity 66%
Wind Speed S 20 G 25 mph
Barometer 29.92 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 21 Jun 3:35 pm EDT
Extended Forecast for

Port Huron MI

Heat Advisory June 21, 03:45pm until June 24, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 21, 03:45pm until June 24, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 77. South southwest wind 8 to 13 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 102. West southwest wind around 10 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 7 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. South wind around 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 77. South southwest wind 8 to 13 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 102. West southwest wind around 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 74. Southwest wind around 7 mph.
Monday
Sunny and hot, with a high near 95. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 65.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, 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. Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
Last Update:
2:49 pm EDT Jun 21, 2025
Forecast Valid:
3pm EDT Jun 21, 2025-6pm EDT Jun 27, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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