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.

Overcast

45°F

7°C

Humidity 81%
Wind Speed E 8 mph
Barometer 30.12 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 16 Mar 12:15 am EDT
Extended Forecast for

Summit NJ

  • Overnight

    Overnight: A chance of showers, then showers and possibly a thunderstorm after 2am. Temperature rising to around 51 by 5am. Southeast wind 11 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 47 °F⇑

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 65. South wind 10 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 32. Breezy, with a south wind 17 to 20 mph becoming west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 41. Wind chill values between 20 and 30. West wind around 17 mph, with gusts as high as 33 mph.

    High: 41 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24. West wind 7 to 13 mph.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 40.

    High: 40 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers, then showers and possibly a thunderstorm after 2am. Temperature rising to around 51 by 5am. Southeast wind 11 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. High near 65. South wind 10 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 32. Breezy, with a south wind 17 to 20 mph becoming west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 41. Wind chill values between 20 and 30. West wind around 17 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly clear, with a low around 24. West wind 7 to 13 mph.
Wednesday
Increasing clouds, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 53.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 51.
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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:
10:28 pm EDT Mar 15, 2026
Forecast Valid:
12am EDT Mar 16, 2026-6pm EDT Mar 22, 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