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

79°F

26°C

Humidity 48%
Wind Speed W 14 G 20 mph
Barometer 29.93 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 24 Aug 3:45 pm EDT
Extended Forecast for

Summit NJ

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 78. West wind around 16 mph.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 59. West wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 80. West wind 6 to 9 mph.

    High: 80 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 59. Northwest wind around 6 mph.

    Low: 59 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light and variable wind becoming west 5 to 7 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly after 2pm. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Friday

    Friday: A 40 percent chance of showers. Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 78. West wind around 16 mph.
Tonight
Mostly clear, with a low around 59. West wind around 6 mph.
Tuesday
Increasing clouds, with a high near 80. West wind 6 to 9 mph.
Tuesday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 59. Northwest wind around 6 mph.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light and variable wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
Showers and possibly a thunderstorm, mainly after 2pm. High near 82. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 67. Chance of precipitation is 80%.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 84.
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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:
2:49 pm EDT Aug 24, 2026
Forecast Valid:
4pm EDT Aug 24, 2026-6pm EDT Aug 31, 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