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.

Mostly Cloudy

79°F

26°C

Humidity 58%
Wind Speed SW 10 mph
Barometer 29.92 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Apr 11:45 am EDT
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 87. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 87 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. Southwest wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 87. Southwest wind 5 to 10 mph.

    High: 87 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. Southwest wind around 6 mph.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 80. West wind 6 to 9 mph.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 87. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. Southwest wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 87. Southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 66. Southwest wind around 6 mph.
Friday
A 40 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 80. West wind 6 to 9 mph.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 70.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 52.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 60.
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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:
5:23 am EDT Apr 15, 2026
Forecast Valid:
12pm EDT Apr 15, 2026-6pm EDT Apr 21, 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