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

36°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 36°F (2°C)
Visibility 0.75 mi
Last update 7 Mar 2:35 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: Areas of drizzle. Patchy fog. Otherwise, cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Areas Drizzle
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 1pm. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 6 mph in the afternoon.

    High: 50 °F

    Patchy Fog

  • Saturday Night

    Saturday Night: Showers likely, mainly between 1am and 4am. Cloudy, with a temperature falling to near 47 by 8pm, then rising to around 57 during the remainder of the night. Southwest wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 66. West wind 7 to 11 mph.

    High: 66 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. West wind around 6 mph becoming calm after midnight.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of drizzle. Patchy fog. Otherwise, cloudy, with a low around 37. Calm wind.
Saturday
Patchy fog before 1pm. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Showers likely, mainly between 1am and 4am. Cloudy, with a temperature falling to near 47 by 8pm, then rising to around 57 during the remainder of the night. Southwest wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 30 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 66. West wind 7 to 11 mph.
Sunday Night
Mostly clear, with a low around 41. West wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 67.
Monday Night
Clear, with a low around 47.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 71.
Wednesday Night
Rain likely. Cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 61.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 47.
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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:
1:06 am EST Mar 7, 2026
Forecast Valid:
2am EST Mar 7, 2026-6pm EDT Mar 13, 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