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

Pontiac, Oakland County International Airport (KPTK)

Lat: 42.66°NLon: 83.41°WElev: 981ft.

Partly Cloudy

73°F

23°C

Humidity 43%
Wind Speed NE 8 mph
Barometer 30.13 in (1020.0 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 15 Jun 10:53 am EDT
Extended Forecast for

South Lyon MI

  • Today

    Today: Mostly sunny, with a high near 80. East northeast wind around 7 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. East northeast wind 3 to 6 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. East wind 3 to 5 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. South southeast wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. Light south wind becoming south southwest 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 90%.

    High: 83 °F

    Chance
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Showers

  • Juneteenth

    Juneteenth: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 80. East northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 58. East northeast wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 82. East wind 3 to 5 mph.
Monday Night
Partly cloudy, with a low around 61. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. Light south wind becoming south southwest 5 to 9 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 64.
Juneteenth
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79.
Thursday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 58.
Friday
Sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Lyon MI
 42.48°N 83.64°W (Elev. 938 ft)
Last Update:
10:49 am EDT Jun 15, 2025
Forecast Valid:
11am EDT Jun 15, 2025-6pm EDT Jun 21, 2025
 
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