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.

Light Snow

25°F

-4°C

Humidity 93%
Wind Speed N 8 mph
Barometer 29.95 in
Dewpoint 23°F (-5°C)
Visibility 2.50 mi
Wind Chill16°F (-9°C)
Last update 27 Dec 5:35 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A chance of snow and sleet. Cloudy, with a low around 26. Northeast wind around 8 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Snow/Sleet

  • Saturday

    Saturday: A 30 percent chance of snow before 10am. Mostly cloudy, with a high near 33. Wind chill values between 20 and 30. North wind 6 to 10 mph.

    High: 33 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 38. Wind chill values between 20 and 30. Light and variable wind.

    High: 38 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain. Temperature rising to around 39 by 5am. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F⇑

    Rain

  • Monday

    Monday: Rain, mainly before 1pm. High near 51. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow and sleet. Cloudy, with a low around 26. Northeast wind around 8 mph. Chance of precipitation is 30%.
Saturday
A 30 percent chance of snow before 10am. Mostly cloudy, with a high near 33. Wind chill values between 20 and 30. North wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 19. Calm wind.
Sunday
A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 38. Wind chill values between 20 and 30. Light and variable wind.
Sunday Night
Rain. Temperature rising to around 39 by 5am. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly before 1pm. High near 51. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly cloudy, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
A 30 percent chance of snow. Partly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Sunny, with a high near 28.
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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:
5:20 am EST Dec 27, 2025
Forecast Valid:
5am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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