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

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Mostly Cloudy

64°F

18°C

Humidity 94%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 8 Sep 8:45 pm EDT
Extended Forecast for

Summit NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. Southwest wind around 11 mph, with gusts as high as 26 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. Calm wind.
Wednesday
Mostly sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 71. Southwest wind around 11 mph, with gusts as high as 26 mph.
Thursday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Northwest wind around 6 mph. Chance of precipitation is 50%.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 64.
Sunday
A 40 percent chance of showers after 8am. Partly sunny, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summit NJ
 40.71°N 74.37°W (Elev. 400 ft)
Last Update:
2:19 pm EDT Sep 8, 2026
Forecast Valid:
9pm EDT Sep 8, 2026-6pm EDT Sep 15, 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