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.

Light Snow

37°F

3°C

Humidity 70%
Wind Speed NW 15 G 22 mph
Barometer 29.98 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 12 Mar 8:45 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Mostly clear, with a low around 30. West wind 7 to 10 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 49. Light southwest wind becoming south 11 to 16 mph in the morning.

    High: 49 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. West wind around 14 mph, with gusts as high as 29 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52. West wind around 18 mph, with gusts as high as 34 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. West wind 5 to 8 mph becoming light and variable after midnight.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 43. Chance of precipitation is 90%.

    Low: 43 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 64. Chance of precipitation is 100%.

    High: 64 °F

    Rain

  • Monday Night

    Monday Night: Rain likely before 2am. Cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 30. West wind 7 to 10 mph.
Friday
Increasing clouds, with a high near 49. Light southwest wind becoming south 11 to 16 mph in the morning.
Friday Night
Partly cloudy, with a low around 38. West wind around 14 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 52. West wind around 18 mph, with gusts as high as 34 mph.
Saturday Night
Increasing clouds, with a low around 34. West wind 5 to 8 mph becoming light and variable after midnight.
Sunday
Mostly cloudy, with a high near 51.
Sunday Night
Rain, mainly after 2am. Low around 43. Chance of precipitation is 90%.
Monday
Rain. High near 64. Chance of precipitation is 100%.
Monday Night
Rain likely before 2am. Cloudy, with a low around 35. Chance of precipitation is 70%.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 45.
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:
6:03 pm EDT Mar 12, 2026
Forecast Valid:
9pm EDT Mar 12, 2026-6pm EDT Mar 19, 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