National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Morristown Municipal (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Partly Cloudy

68°F

20°C

Humidity 69%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 13 Jun 7:50 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: A slight chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 78. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 60. Southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before 2pm. Cloudy, with a high near 66. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Cloudy, with a low around 58. East wind around 6 mph.

    Low: 58 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Cloudy, with a high near 67. Northeast wind around 7 mph.

    High: 67 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

Detailed Forecast

Today
A slight chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 78. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 60. Southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, mainly before 2pm. Cloudy, with a high near 66. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 30 percent chance of showers. Cloudy, with a low around 58. East wind around 6 mph.
Sunday
A 30 percent chance of showers. Cloudy, with a high near 67. Northeast wind around 7 mph.
Sunday Night
A 30 percent chance of showers. Cloudy, with a low around 59.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Mostly cloudy, with a high near 77.
Tuesday Night
Mostly cloudy, with a low around 64.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Wednesday Night
Mostly cloudy, with a low around 69.
Juneteenth
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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:
3:44 am EDT Jun 13, 2025
Forecast Valid:
8am EDT Jun 13, 2025-6pm EDT Jun 19, 2025
 
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