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.

Fair

55°F

13°C

Humidity 88%
Wind Speed NW 7 mph
Barometer 30.23 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 18 Sep 3:35 am EDT
Extended Forecast for

3 Miles WNW Port Huron MI

  • Overnight

    Overnight: Partly cloudy, with a low around 58. North wind around 6 mph.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 68. North northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 53. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely, mainly before 3pm. Cloudy, with a high near 67. East wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers after 8pm. Cloudy, with a low around 53. East wind around 6 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 58. North wind around 6 mph.
Friday
Mostly sunny, with a high near 68. North northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 53. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely, mainly before 3pm. Cloudy, with a high near 67. East wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A chance of showers after 8pm. Cloudy, with a low around 53. East wind around 6 mph. Chance of precipitation is 30%.
Sunday
A chance of showers before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 62.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 50.
Wednesday
A chance of showers. Partly sunny, with a high near 63.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 50.
Thursday
Mostly cloudy, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Port Huron MI
 42.99°N 82.49°W (Elev. 627 ft)
Last Update:
3:13 am EDT Sep 18, 2026
Forecast Valid:
3am EDT Sep 18, 2026-6pm EDT Sep 24, 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