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

46°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 4 Oct 1:35 am EDT
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: Clear, with a steady temperature around 52. West wind around 5 mph.

    Low: 52 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81. West wind around 5 mph becoming calm in the morning.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 55. Light and variable wind.

    Low: 55 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a steady temperature around 52. West wind around 5 mph.
Saturday
Sunny, with a high near 81. West wind around 5 mph becoming calm in the morning.
Saturday Night
Mostly clear, with a low around 55. Calm wind.
Sunday
Sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 55. Light and variable wind.
Monday
Sunny, with a high near 81.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 56.
Tuesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 80.
Tuesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Wednesday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 65.
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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:
1:43 am EDT Oct 4, 2025
Forecast Valid:
1am EDT Oct 4, 2025-6pm EDT Oct 10, 2025
 
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