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

45°F

7°C

Humidity 71%
Wind Speed SW 5 mph
Barometer 30.09 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 7 Apr 1:35 am EDT
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 43. Light south wind.

    Low: 43 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 52. West wind 8 to 15 mph, with gusts as high as 30 mph.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 50. Wind chill values between 25 and 35 early. Northeast wind around 6 mph becoming southeast in the afternoon.

    High: 50 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32. Southeast wind around 6 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 43. Light south wind.
Tuesday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 52. West wind 8 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 28. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 50. Wind chill values between 25 and 35 early. Northeast wind around 6 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 32. Southeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.67°N 74.4°W (Elev. 272 ft)
Last Update:
8:00 pm EDT Apr 6, 2026
Forecast Valid:
1am EDT Apr 7, 2026-6pm EDT Apr 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