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.

Fair

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 Apr 11:55 pm EDT
Extended Forecast for

Summit NJ

  • Overnight

    Overnight: Partly cloudy, with a low around 63. West wind 3 to 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 88 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 65. Southwest wind around 6 mph.

    Low: 65 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 63. West wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 88. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 65. Southwest wind around 6 mph.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 71.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 54.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit NJ
 40.71°N 74.37°W (Elev. 400 ft)
Last Update:
9:09 pm EDT Apr 14, 2026
Forecast Valid:
12am EDT Apr 15, 2026-6pm EDT Apr 21, 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