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.

Fog/Mist

50°F

10°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.77 in
Dewpoint 50°F (10°C)
Visibility 4.00 mi
Last update 8 Mar 4:15 am EDT
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 40 percent chance of showers. Areas of dense fog. Otherwise, mostly cloudy, with a low around 47. Southwest wind around 8 mph.

    Low: 47 °F

    Chance
    Showers and
    Areas Dense
    Fog

  • Sunday

    Sunday: A 30 percent chance of showers, mainly between 8am and 11am. Areas of dense fog before 11am. Otherwise, mostly cloudy, with a high near 67. West wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 67 °F

    Chance
    Showers and
    Areas Dense
    Fog then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. West wind 5 to 7 mph.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 66. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. Southwest wind 3 to 6 mph.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 40 percent chance of showers. Areas of dense fog. Otherwise, mostly cloudy, with a low around 47. Southwest wind around 8 mph.
Sunday
A 30 percent chance of showers, mainly between 8am and 11am. Areas of dense fog before 11am. Otherwise, mostly cloudy, with a high near 67. West wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 42. West wind 5 to 7 mph.
Monday
Sunny, with a high near 66. Light southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 44. Southwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly cloudy, with a high near 70.
Wednesday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 55.
Thursday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 48.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
4:09 am EDT Mar 8, 2026
Forecast Valid:
4am EDT Mar 8, 2026-6pm EDT Mar 14, 2026
 
Forecast Discussion
 
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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