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

63°F

17°C

Humidity 39%
Wind Speed W 8 mph
Barometer 29.86 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 1 May 2:45 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 48. Southwest wind 5 to 7 mph.

    Low: 48 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 61. Northwest wind around 6 mph.

    High: 61 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 6 to 8 mph.

    Low: 41 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Southwest wind 5 to 7 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 48. Southwest wind 5 to 7 mph.
Saturday
Mostly cloudy, with a high near 61. Northwest wind around 6 mph.
Saturday Night
A 20 percent chance of rain before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 60. Northwest wind 10 to 13 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 44. Southwest wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 62.
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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:
2:21 pm EDT May 1, 2026
Forecast Valid:
3pm EDT May 1, 2026-6pm EDT May 8, 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