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.

Mostly Cloudy

28°F

-2°C

Humidity 55%
Wind Speed SW 5 mph
Barometer 30.06 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 16 Jan 9:55 pm EST
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: A 50 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 29. Wind chill values between 20 and 25. South wind around 6 mph.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow, mainly before 4pm. High near 38. Southwest wind 3 to 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 38 °F

    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. West wind 3 to 5 mph.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 40 percent chance of snow. Cloudy, with a high near 35. West wind 3 to 7 mph.

    High: 35 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 20. West wind around 6 mph.

    Low: 20 °F

    Decreasing
    Clouds

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 31.

    High: 31 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Tonight
A 50 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 29. Wind chill values between 20 and 25. South wind around 6 mph.
Saturday
Snow, mainly before 4pm. High near 38. Southwest wind 3 to 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. West wind 3 to 5 mph.
Sunday
A 40 percent chance of snow. Cloudy, with a high near 35. West wind 3 to 7 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 20. West wind around 6 mph.
M.L.King Day
Sunny, with a high near 31.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny and cold, with a high near 19.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly cloudy, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 30.
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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:
3:33 pm EST Jan 16, 2026
Forecast Valid:
10pm EST Jan 16, 2026-6pm EST Jan 23, 2026
 
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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