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.

Overcast

70°F

21°C

Humidity 90%
Wind Speed W 5 mph
Barometer 29.64 in (1003.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 28 Jul 4:53 am EDT
Extended Forecast for

South Lyon MI

  • Overnight

    Overnight: A slight chance of showers. Mostly cloudy, with a low around 65. North northwest wind around 7 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before noon. Mostly cloudy, with a high near 81. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. North wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. North wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. North wind 5 to 9 mph.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 65. North northwest wind around 7 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers before noon. Mostly cloudy, with a high near 81. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 58. North wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 81. North wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Clear, with a low around 56. North wind 5 to 9 mph.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 59.
Friday
Mostly sunny, with a high near 86.
Friday Night
Mostly cloudy, with a low around 63.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 62.
Sunday
A chance of showers. Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Lyon MI
 42.48°N 83.64°W (Elev. 938 ft)
Last Update:
4:24 am EDT Jul 28, 2026
Forecast Valid:
5am EDT Jul 28, 2026-6pm EDT Aug 3, 2026
 
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