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.

A Few Clouds

64°F

18°C

Humidity 73%
Wind Speed W 5 mph
Barometer 30.14 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 3 Apr 6:51 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: A slight chance of showers between 8pm and 2am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Southwest wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 70 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Cloudy, with a low around 46. East wind 7 to 15 mph.

    Low: 46 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 67. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind around 10 mph. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers between 8pm and 2am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Southwest wind 6 to 9 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers after 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Saturday Night
A 40 percent chance of showers. Cloudy, with a low around 46. East wind 7 to 15 mph.
Sunday
Showers. High near 67. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind around 10 mph. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 69.
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:
2:23 pm EDT Apr 3, 2026
Forecast Valid:
7pm EDT Apr 3, 2026-6pm EDT Apr 10, 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