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.

Partly Cloudy

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 13 Aug 4:35 am EDT
Extended Forecast for

Summit NJ

  • Overnight

    Overnight: Showers and thunderstorms, mainly before 5am. Steady temperature around 72. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    T-storms

  • Thursday

    Thursday: Partly sunny, with a high near 85. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 85 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. Northwest wind 5 to 7 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86. North wind around 6 mph.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 2am. Partly cloudy, with a low around 65. Calm wind becoming north around 6 mph after midnight.

    Low: 65 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

Detailed Forecast

Overnight
Showers and thunderstorms, mainly before 5am. Steady temperature around 72. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 85. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 66. Northwest wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 86. North wind around 6 mph.
Friday Night
A 20 percent chance of showers before 2am. Partly cloudy, with a low around 65. Calm wind becoming north around 6 mph after midnight.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 83.
Sunday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Monday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 85.
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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:
4:30 am EDT Aug 13, 2026
Forecast Valid:
4am EDT Aug 13, 2026-6pm EDT Aug 19, 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