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.

Overcast

25°F

-4°C

Humidity 69%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 14 Feb 2:15 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 30 percent chance of snow showers. Mostly cloudy, with a steady temperature around 28. Southwest wind 3 to 5 mph.

    Low: 28 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 43. Wind chill values between 25 and 35. Southwest wind 6 to 8 mph.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Light west wind.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 39. Calm wind becoming east around 6 mph in the afternoon.

    High: 39 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 29. Northeast wind 3 to 5 mph.

    Low: 29 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of snow showers. Mostly cloudy, with a steady temperature around 28. Southwest wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 43. Wind chill values between 25 and 35. Southwest wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 26. Light west wind.
Sunday
Partly sunny, with a high near 39. Calm wind becoming east around 6 mph in the afternoon.
Sunday Night
A 30 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 29. Northeast wind 3 to 5 mph.
Washington's Birthday
Partly sunny, with a high near 41.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 45. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 50%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
1:38 am EST Feb 14, 2026
Forecast Valid:
2am EST Feb 14, 2026-6pm EST Feb 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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