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

46°F

8°C

Humidity 57%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 14 May 9:35 pm EDT
Extended Forecast for

3 Miles NNE Avoca MI

  • Tonight

    Tonight: Mostly clear, with a low around 38. Calm wind becoming west northwest around 5 mph after midnight.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 69. Light south southwest wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 69 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. South southwest wind around 9 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Showers likely before 2pm. Increasing clouds, with a high near 77. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 77 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. Southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Calm wind becoming west northwest around 5 mph after midnight.
Friday
Partly sunny, with a high near 69. Light south southwest wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 50. South southwest wind around 9 mph, with gusts as high as 18 mph.
Saturday
Showers likely before 2pm. Increasing clouds, with a high near 77. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 53. Southwest wind 5 to 7 mph becoming northwest after midnight.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Sunny, with a high near 87.
Monday Night
A chance of showers after 2am. Partly cloudy, with a low around 66.
Tuesday
Showers likely, mainly after 2pm. Partly sunny, with a high near 86. Breezy.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 57.
Wednesday
A chance of showers. Mostly sunny, with a high near 72.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 46.
Thursday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Avoca MI
 43.11°N 82.65°W (Elev. 758 ft)
Last Update:
4:24 pm EDT May 14, 2026
Forecast Valid:
9pm EDT May 14, 2026-6pm EDT May 21, 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