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

34°F

1°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 9 Mar 4:15 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. Southwest wind around 5 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49. Light south wind.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Mostly clear, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 44. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 49. Light south wind.
Wednesday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow before 8pm. Mostly clear, with a low around 32. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 48.
Friday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
A 30 percent chance of rain. Cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
1:57 am EDT Mar 9, 2026
Forecast Valid:
4am EDT Mar 9, 2026-6pm EDT Mar 15, 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