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

68°F

20°C

Humidity 69%
Wind Speed S 7 mph
Barometer 30.16 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Sep 5:45 pm EDT
Extended Forecast for

Summit NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Southeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly between 8am and 5pm, then rain likely after 5pm. High near 72. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 72 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 57. Light and variable wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers before 8am, then a slight chance of showers after 2pm. Increasing clouds, with a high near 67. North wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 52. Northeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 59. Southeast wind 3 to 6 mph.
Sunday
Showers, mainly between 8am and 5pm, then rain likely after 5pm. High near 72. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 57. Light and variable wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A slight chance of showers before 8am, then a slight chance of showers after 2pm. Increasing clouds, with a high near 67. North wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 52. Northeast wind 6 to 9 mph. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Mostly cloudy, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 62.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 50.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 67.
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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:
2:28 pm EDT Sep 19, 2026
Forecast Valid:
6pm EDT Sep 19, 2026-6pm EDT Sep 26, 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