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

50°F

10°C

Humidity 94%
Wind Speed SW 7 mph
Barometer 30.10 in
Dewpoint 48°F (9°C)
Visibility 7.00 mi
Wind Chill47°F (8°C)
Last update 9 Jan 11:35 pm EST
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. West wind around 7 mph becoming northwest after midnight.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 45. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am. Low around 38. Northeast wind around 6 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Partly sunny, with a high near 45. West wind 8 to 18 mph, with gusts as high as 29 mph.

    High: 45 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. West wind 14 to 16 mph, with gusts as high as 29 mph.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. West wind around 7 mph becoming northwest after midnight.
Saturday
Rain, mainly after 1pm. High near 45. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 1am. Low around 38. Northeast wind around 6 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 20 percent chance of rain before 1pm. Partly sunny, with a high near 45. West wind 8 to 18 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 28. West wind 14 to 16 mph, with gusts as high as 29 mph.
Monday
Sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 39.
Thursday Night
Mostly cloudy, with a low around 22.
Friday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
6:02 pm EST Jan 9, 2026
Forecast Valid:
11pm EST Jan 9, 2026-6pm EST Jan 16, 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