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

82°F

28°C

Humidity 74%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 18 Aug 12:55 pm EDT
Extended Forecast for

Summit NJ

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 85. Northwest wind 3 to 5 mph.

    High: 85 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. Light west wind.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 85. Northwest wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 68. Light west wind.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Partly sunny, with a high near 81.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 65.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 79.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 64.
Sunday
Showers likely. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Sunday Night
Showers likely. Partly cloudy, with a low around 62. Chance of precipitation is 60%.
Monday
Sunny, with a high near 80.
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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:
5:37 am EDT Aug 18, 2026
Forecast Valid:
1pm EDT Aug 18, 2026-6pm EDT Aug 24, 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