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

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 32°F (0°C)
Visibility 1.75 mi
Last update 3 Mar 11:15 pm EST
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog. Steady temperature around 38. West wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before 1pm. Cloudy, with a high near 46. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm. Low around 39. Northeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

Detailed Forecast

Tonight
Rain, mainly before 4am. Patchy fog. Steady temperature around 38. West wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 50. Calm wind.
Wednesday Night
A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 37. Calm wind.
Thursday
Rain likely, mainly before 1pm. Cloudy, with a high near 46. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain and possibly a thunderstorm. Low around 39. Northeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Mostly cloudy, with a high near 53.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly cloudy, with a high near 61.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 66.
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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:
7:28 pm EST Mar 3, 2026
Forecast Valid:
11pm EST Mar 3, 2026-6pm EDT Mar 10, 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