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.

Overcast

77°F

25°C

Humidity 57%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Aug 2:35 pm EDT
Extended Forecast for

Port Huron MI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 76. North northeast wind around 7 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 78 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Northeast wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 59.

    Low: 59 °F

    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 76. North northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. Northeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 82. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 80. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 59.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Huron MI
 42.97°N 82.43°W (Elev. 600 ft)
Last Update:
2:24 pm EDT Aug 19, 2026
Forecast Valid:
2pm EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation