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.

Overcast

37°F

3°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.26 in
Dewpoint 37°F (3°C)
Visibility 1.25 mi
Last update 7 Mar 8:45 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: Areas of fog before 1pm. Otherwise, cloudy, with a high near 50. South wind 3 to 6 mph.

    High: 50 °F

    Areas Fog

  • Tonight

    Tonight: Showers likely, mainly between 1am and 4am. Cloudy, with a temperature rising to around 57 by 5am. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 65. West wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 65 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. West wind 3 to 7 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

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

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

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

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain. Mostly cloudy, with a high near 71.

    High: 71 °F

    Chance Rain

Detailed Forecast

Today
Areas of fog before 1pm. Otherwise, cloudy, with a high near 50. South wind 3 to 6 mph.
Tonight
Showers likely, mainly between 1am and 4am. Cloudy, with a temperature rising to around 57 by 5am. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 65. West wind 8 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 40. West wind 3 to 7 mph.
Monday
Sunny, with a high near 66. Light west wind becoming southwest 5 to 10 mph in the morning.
Monday Night
Clear, with a low around 46.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 71.
Wednesday Night
Rain likely. Cloudy, with a low around 50. Chance of precipitation is 60%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
2:47 am EST Mar 7, 2026
Forecast Valid:
9am EST Mar 7, 2026-6pm EDT Mar 13, 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