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

34°F

1°C

Humidity 32%
Wind Speed SW 5 mph
Barometer 30.62 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 2 Mar 4:45 pm EST
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: A 20 percent chance of snow after 4am. Increasing clouds, with a low around 25. Light east wind.

    Low: 25 °F

    Mostly Clear
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Snow likely, possibly mixed with freezing rain before 10am, then rain and snow between 10am and 1pm, then rain after 1pm. High near 37. East wind 3 to 6 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Wintry Mix

  • Tuesday Night

    Tuesday Night: Rain. Low around 36. Calm wind becoming west around 6 mph in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Light and variable wind.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 38. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain. Low around 41. Chance of precipitation is 80%.

    Low: 41 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow after 4am. Increasing clouds, with a low around 25. Light east wind.
Tuesday
Snow likely, possibly mixed with freezing rain before 10am, then rain and snow between 10am and 1pm, then rain after 1pm. High near 37. East wind 3 to 6 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 36. Calm wind becoming west around 6 mph in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Partly sunny, with a high near 51. Light and variable wind.
Wednesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 38. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 50.
Thursday Night
Rain. Low around 41. Chance of precipitation is 80%.
Friday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly cloudy, with a high near 58.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 50.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 68.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 65.
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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:
1:04 pm EST Mar 2, 2026
Forecast Valid:
4pm EST Mar 2, 2026-6pm EDT Mar 9, 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