National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Partly Cloudy

41°F

5°C

Humidity 42%
Wind Speed W 15 G 25 mph
Barometer 29.39 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 29 Dec 5:45 pm EST
Extended Forecast for

Mountainside NJ

Wind Advisory until December 30, 06:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 30, 06:00pm

    NOW until 6:00pm Tue

    Wind Advisory

  • Tonight

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 31. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 44 mph.

    High: 31 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind 10 to 14 mph, with gusts as high as 29 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 32. Wind chill values between 15 and 25. West wind around 11 mph, with gusts as high as 25 mph.

    High: 32 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 21. Southwest wind around 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 21 °F

    Chance Snow

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Wind chill values between 10 and 20. West wind 16 to 18 mph, with gusts as high as 43 mph.
Tuesday
Increasing clouds, with a high near 31. Wind chill values between 10 and 20. West wind around 17 mph, with gusts as high as 44 mph.
Tuesday Night
Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind 10 to 14 mph, with gusts as high as 29 mph.
Wednesday
Partly sunny, with a high near 32. Wind chill values between 15 and 25. West wind around 11 mph, with gusts as high as 25 mph.
Wednesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 21. Southwest wind around 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
New Year's Day
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Partly sunny, with a high near 30.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Mostly cloudy, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
3:54 pm EST Dec 29, 2025
Forecast Valid:
6pm EST Dec 29, 2025-6pm EST Jan 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation