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.

Fair

55°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 2 Aug 2:55 am EDT
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 59. North wind around 5 mph.

    Low: 59 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 80. North wind around 6 mph.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 59. North wind around 5 mph.
Saturday
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 80. North wind around 6 mph.
Saturday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 57. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 84. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Mostly cloudy, with a low around 67.
Wednesday
Partly sunny, with a high near 82.
Wednesday Night
Mostly cloudy, with a low around 67.
Thursday
Partly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 82.
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:
2:10 am EDT Aug 2, 2025
Forecast Valid:
3am EDT Aug 2, 2025-6pm EDT Aug 8, 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