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

61°F

16°C

Humidity 55%
Wind Speed N 8 G 17 mph
Barometer 29.76 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 30 Apr 5:48 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Partly cloudy, with a low around 44. Northwest wind around 8 mph.

    Low: 44 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 64. Northwest wind around 8 mph.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 46. West wind 3 to 6 mph.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 59. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 59 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 43. Southeast wind around 6 mph becoming northwest in the evening.

    Low: 43 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 8pm. Partly cloudy, with a low around 44. Northwest wind around 8 mph.
Friday
Sunny, with a high near 64. Northwest wind around 8 mph.
Friday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 46. West wind 3 to 6 mph.
Saturday
A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 59. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 43. Southeast wind around 6 mph becoming northwest in the evening.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 72.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Thursday
Showers likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
2:27 pm EDT Apr 30, 2026
Forecast Valid:
6pm EDT Apr 30, 2026-6pm EDT May 7, 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