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

43°F

6°C

Humidity 46%
Wind Speed S 9 G 18 mph
Barometer 30.01 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 13 Mar 1:45 pm EDT
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 43. South wind 11 to 13 mph, with gusts as high as 25 mph.

    High: 43 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of rain between 8pm and 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 38. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. Breezy, with a west wind 17 to 21 mph, with gusts as high as 33 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. Northwest wind 5 to 9 mph becoming light after midnight.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 48. Northeast wind 5 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 48 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Cloudy, with a temperature falling to near 44 by 8pm, then rising to around 49 during the remainder of the night. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F⇑

    Chance Rain
    then Rain
    Likely

  • Monday

    Monday: Rain, with thunderstorms also possible after 2pm. High near 65. Breezy. Chance of precipitation is 90%.

    High: 65 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 37. Windy. Chance of precipitation is 80%.

    Low: 37 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: A 30 percent chance of rain before 8am. Partly sunny, with a high near 44.

    High: 44 °F

    Chance Rain
    then Partly
    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 43. South wind 11 to 13 mph, with gusts as high as 25 mph.
Tonight
A slight chance of rain between 8pm and 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 38. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 50. Breezy, with a west wind 17 to 21 mph, with gusts as high as 33 mph.
Saturday Night
Increasing clouds, with a low around 34. Northwest wind 5 to 9 mph becoming light after midnight.
Sunday
Mostly cloudy, with a high near 48. Northeast wind 5 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Rain likely, mainly after 2am. Cloudy, with a temperature falling to near 44 by 8pm, then rising to around 49 during the remainder of the night. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, with thunderstorms also possible after 2pm. High near 65. Breezy. Chance of precipitation is 90%.
Monday Night
Rain and possibly a thunderstorm. Low around 37. Windy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of rain before 8am. Partly sunny, with a high near 44.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly cloudy, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
6:18 am EDT Mar 13, 2026
Forecast Valid:
2pm EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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