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.

Fair

59°F

15°C

Humidity 90%
Wind Speed N 5 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Sep 2:53 am EDT
Extended Forecast for

Union Lake MI

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 54. Light north wind.

    Low: 54 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Southeast wind 3 to 6 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82. South southwest wind 5 to 9 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63. West southwest wind around 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 54. Light north wind.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60. Southeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 82. South southwest wind 5 to 9 mph.
Saturday Night
Partly cloudy, with a low around 63. West southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 72.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 82.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 58.
Wednesday
A chance of showers. Partly sunny, with a high near 74.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 59.
Thursday
Showers likely. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union Lake MI
 42.6°N 83.42°W (Elev. 928 ft)
Last Update:
3:13 am EDT Sep 11, 2026
Forecast Valid:
3am EDT Sep 11, 2026-6pm EDT Sep 17, 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