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.

Partly Cloudy

43°F

6°C

Humidity 66%
Wind Speed NW 6 mph
Barometer 29.85 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 11 Jan 9:47 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: A 30 percent chance of snow showers after 4pm. Mostly sunny, with a high near 46. West wind 9 to 15 mph.

    High: 46 °F

    Sunny then
    Chance Snow
    Showers

  • Tonight

    Tonight: A 30 percent chance of snow showers before 7pm. Mostly clear, with a low around 29. Wind chill values between 20 and 25. Breezy, with a west wind 11 to 20 mph, with gusts as high as 33 mph.

    Low: 29 °F

    Breezy.
    Chance Snow
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 42. Wind chill values between 20 and 30. Southwest wind around 10 mph, with gusts as high as 22 mph.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Southwest wind 5 to 8 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45. Southwest wind 5 to 8 mph.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 49.

    High: 49 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 40%.

    High: 38 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
A 30 percent chance of snow showers after 4pm. Mostly sunny, with a high near 46. West wind 9 to 15 mph.
Tonight
A 30 percent chance of snow showers before 7pm. Mostly clear, with a low around 29. Wind chill values between 20 and 25. Breezy, with a west wind 11 to 20 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 42. Wind chill values between 20 and 30. Southwest wind around 10 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 30. Southwest wind 5 to 8 mph.
Tuesday
Sunny, with a high near 45. Southwest wind 5 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Cloudy, with a high near 49.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 37.
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:
1:40 am EST Jan 11, 2026
Forecast Valid:
10am EST Jan 11, 2026-6pm EST Jan 17, 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