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

36°F

2°C

Humidity 87%
Wind Speed Calm
Barometer 30.26 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 30 Mar 4:15 am EDT
Extended Forecast for

Summit NJ

  • Today

    Today: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 66. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.

    High: 66 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 55. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Partly sunny, with a high near 75. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Southwest wind 11 to 15 mph.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 80. Southwest wind around 15 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 72.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 66. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.
Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 55. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 75. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Mostly cloudy, with a low around 62. Southwest wind 11 to 15 mph.
Wednesday
Showers likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 80. Southwest wind around 15 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 62.
Thursday Night
A 40 percent chance of rain. Cloudy, with a low around 48.
Friday
A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 72.
Friday Night
A 40 percent chance of rain before 2am. Mostly cloudy, with a low around 56.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 73.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 50.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 69.
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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 am EDT Mar 30, 2026
Forecast Valid:
4am EDT Mar 30, 2026-6pm EDT Apr 5, 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