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.

Overcast

50°F

10°C

Humidity 71%
Wind Speed S 8 mph
Barometer 30.13 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 9 Jan 1:45 pm EST
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: Scattered showers, mainly after 4pm. Cloudy, with a high near 55. South wind around 9 mph. Chance of precipitation is 30%.

    High: 55 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 60%.

    Low: 39 °F

    Showers
    Likely then
    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.

    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

Detailed Forecast

This Afternoon
Scattered showers, mainly after 4pm. Cloudy, with a high near 55. South wind around 9 mph. Chance of precipitation is 30%.
Tonight
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 60%.
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.
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.
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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:
1:01 pm EST Jan 9, 2026
Forecast Valid:
2pm EST Jan 9, 2026-6pm EST Jan 15, 2026
 
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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