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.

Fair

23°F

-5°C

Humidity 93%
Wind Speed Calm
Barometer 30.56 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 29 Mar 5:15 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: Mostly sunny, with a high near 55. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Southwest wind around 10 mph.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 64. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 64 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 54. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 77. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 77 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 55. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Tonight
Mostly cloudy, with a low around 43. Southwest wind around 10 mph.
Monday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 64. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 54. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 77. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Showers likely after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 57.
Thursday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Friday
Rain likely. Cloudy, with a high near 56. Chance of precipitation is 60%.
Friday Night
Rain likely. Cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 58.
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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:
2:25 am EDT Mar 29, 2026
Forecast Valid:
5am EDT Mar 29, 2026-6pm EDT Apr 4, 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