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.

Partly Cloudy

18°F

-8°C

Humidity 93%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 5 Jan 6:46 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: A slight chance of snow between 10am and 4pm. Mostly cloudy, with a high near 34. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 34 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Light and variable wind.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 41. Calm wind.

    High: 41 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a steady temperature around 38. Calm wind becoming west around 6 mph after midnight.

    Low: 38 °F

    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. West wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A 50 percent chance of rain. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

Detailed Forecast

Today
A slight chance of snow between 10am and 4pm. Mostly cloudy, with a high near 34. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 28. Light and variable wind.
Tuesday
Mostly cloudy, with a high near 41. Calm wind.
Tuesday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a steady temperature around 38. Calm wind becoming west around 6 mph after midnight.
Wednesday
Mostly sunny, with a high near 48. West wind 8 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 38.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 56.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
1:36 am EST Jan 5, 2026
Forecast Valid:
7am EST Jan 5, 2026-6pm EST Jan 11, 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