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

21°F

-6°C

Humidity 49%
Wind Speed W 12 mph
Barometer 29.75 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 16 Jan 5:55 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: Sunny, with a high near 35. Wind chill values between 10 and 20. West wind 9 to 13 mph, with gusts as high as 29 mph.

    High: 35 °F

    Sunny

  • Tonight

    Tonight: A 40 percent chance of snow after 1am. Increasing clouds, with a steady temperature around 31. Wind chill values between 25 and 30. South wind 3 to 6 mph.

    Low: 31 °F

    Partly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. South wind 3 to 7 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A chance of rain before 7pm, then a slight chance of snow after 1am. Mostly cloudy, with a low around 30. West wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Rain
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow. Mostly cloudy, with a high near 35. West wind 3 to 8 mph.

    High: 35 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 35. Wind chill values between 10 and 20. West wind 9 to 13 mph, with gusts as high as 29 mph.
Tonight
A 40 percent chance of snow after 1am. Increasing clouds, with a steady temperature around 31. Wind chill values between 25 and 30. South wind 3 to 6 mph.
Saturday
Snow likely before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 38. South wind 3 to 7 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Saturday Night
A chance of rain before 7pm, then a slight chance of snow after 1am. Mostly cloudy, with a low around 30. West wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 35. West wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 21.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 11.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
1:17 am EST Jan 16, 2026
Forecast Valid:
6am EST Jan 16, 2026-6pm EST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation