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.

A Few Clouds

75°F

24°C

Humidity 36%
Wind Speed SW 7 mph
Barometer 29.84 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 16 Jun 2:45 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Light southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 81 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers. Increasing clouds, with a low around 64. Southeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 90. Breezy, with a south wind 8 to 13 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. West wind 9 to 16 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. Southwest wind 5 to 7 mph becoming calm after midnight.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Light southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers. Increasing clouds, with a low around 64. Southeast wind 3 to 6 mph. Chance of precipitation is 60%.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 90. Breezy, with a south wind 8 to 13 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 67. West wind 9 to 16 mph. Chance of precipitation is 30%.
Juneteenth
Partly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
3:07 pm EDT Jun 16, 2026
Forecast Valid:
3pm EDT Jun 16, 2026-6pm EDT Jun 23, 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