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.

Overcast

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 30.29 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 16 Sep 10:35 pm EDT
Extended Forecast for

Summit NJ

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 11pm. Mostly cloudy, with a low around 67. South wind 3 to 5 mph.

    Low: 67 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 81. North wind around 8 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. North wind 5 to 7 mph.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 8am. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 64. Calm wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 11pm. Mostly cloudy, with a low around 67. South wind 3 to 5 mph.
Friday
Sunny, with a high near 81. North wind around 8 mph.
Friday Night
Partly cloudy, with a low around 56. North wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 58.
Sunday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 70.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 56.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summit NJ
 40.71°N 74.39°W (Elev. 230 ft)
Last Update:
3:19 pm EDT Sep 16, 2026
Forecast Valid:
10pm EDT Sep 16, 2026-6pm EDT Sep 23, 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