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.

Light Rain Fog/Mist

57°F

14°C

Humidity 94%
Wind Speed SW 14 mph
Barometer 29.79 in
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 5 Apr 2:45 pm EDT
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: Rain, mainly before 5pm. Patchy fog. Steady temperature around 56. West wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 39. West wind around 9 mph.

    Low: 39 °F

    Gradual
    Clearing

  • Monday

    Monday: Sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 26 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. West wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 50. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain, mainly before 5pm. Patchy fog. Steady temperature around 56. West wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 39. West wind around 9 mph.
Monday
Sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 39. West wind 3 to 6 mph.
Tuesday
Sunny, with a high near 50. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 74.
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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:
2:55 pm EDT Apr 5, 2026
Forecast Valid:
2pm EDT Apr 5, 2026-6pm EDT Apr 11, 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