National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Light Snow Fog/Mist

32°F

0°C

Humidity 100%
Wind Speed NW 3 mph
Barometer 29.89 in
Dewpoint 32°F (0°C)
Visibility 1.00 mi
Last update 18 Jan 7:50 pm EST
Extended Forecast for

Mountainside NJ

Winter Weather Advisory January 18, 07:55pm until January 19, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 18, 07:55pm until January 19, 12:00am

    NOW until 12:00am Mon

    Winter Weather Advisory

  • Tonight

    Low: 22 °F

    Snow Likely
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 32. Wind chill values between 15 and 25. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.

    High: 32 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. Wind chill values between zero and 10. West wind 10 to 14 mph, with gusts as high as 28 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22. Wind chill values between zero and 10. West wind 11 to 15 mph, with gusts as high as 29 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 9. West wind 3 to 7 mph.

    Low: 9 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain and snow before 1pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Snow likely before 10pm. Mostly cloudy, with a low around 22. North wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of around an inch possible.
M.L.King Day
Increasing clouds, with a high near 32. Wind chill values between 15 and 25. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 15. Wind chill values between zero and 10. West wind 10 to 14 mph, with gusts as high as 28 mph.
Tuesday
Sunny, with a high near 22. Wind chill values between zero and 10. West wind 11 to 15 mph, with gusts as high as 29 mph.
Tuesday Night
Clear, with a low around 9. West wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
A chance of rain and snow before 1pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 17.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 28.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 21.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
6:17 pm EST Jan 18, 2026
Forecast Valid:
7pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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