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.

Partly Cloudy

64°F

18°C

Humidity 52%
Wind Speed N 8 mph
Barometer 29.97 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 23 Apr 9:45 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: Sunny, with a high near 75. Northwest wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 49. North wind 5 to 8 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of rain after 2am. Mostly cloudy, with a low around 46. East wind 3 to 6 mph.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: Rain, mainly after 8am. High near 51. East wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 2am. Low around 43. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Sunday

    Sunday: A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 75. Northwest wind 6 to 13 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 49. North wind 5 to 8 mph.
Friday
Mostly sunny, with a high near 67. Light and variable wind becoming west around 6 mph in the afternoon.
Friday Night
A 40 percent chance of rain after 2am. Mostly cloudy, with a low around 46. East wind 3 to 6 mph.
Saturday
Rain, mainly after 8am. High near 51. East wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 2am. Low around 43. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of rain before 8am. Mostly cloudy, with a high near 56.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 63.
Monday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 46.
Tuesday
Showers likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers. Mostly cloudy, 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:
5:06 am EDT Apr 23, 2026
Forecast Valid:
10am EDT Apr 23, 2026-6pm EDT Apr 29, 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