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

43°F

6°C

Humidity 76%
Wind Speed E 6 mph
Barometer 30.09 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 10 Jan 1:45 pm EST
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: Rain. High near 44. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 10pm. Patchy fog after 10pm. Low around 41. Northeast wind 5 to 8 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain and
    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Sunday

    Sunday: A slight chance of rain and snow showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 44. West wind 7 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 44 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. Wind chill values between 20 and 25. West wind 13 to 16 mph, with gusts as high as 33 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain. High near 44. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, mainly before 10pm. Patchy fog after 10pm. Low around 41. Northeast wind 5 to 8 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A slight chance of rain and snow showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 44. West wind 7 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 29. Wind chill values between 20 and 25. West wind 13 to 16 mph, with gusts as high as 33 mph.
Monday
Mostly sunny, with a high near 41. West wind 9 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Cloudy, with a high near 48.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 33.
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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:
1:33 pm EST Jan 10, 2026
Forecast Valid:
2pm EST Jan 10, 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