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

57°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 57°F (14°C)
Visibility 7.00 mi
Last update 18 May 5:15 am EDT
Extended Forecast for

Summit NJ

  • Today

    Today: Sunny, with a high near 94. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. South wind around 7 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 97. Southwest wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 97 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75. Southwest wind around 9 mph.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly before 8pm. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 94. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 72. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 97. Southwest wind 5 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
Partly cloudy, with a low around 75. Southwest wind around 9 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. West wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Wednesday Night
Showers, mainly before 8pm. Low around 56. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 71.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 66.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Saturday Night
Showers likely. Cloudy, with a low around 55. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 71.
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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:
2:32 am EDT May 18, 2026
Forecast Valid:
5am EDT May 18, 2026-6pm EDT May 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