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.

Fog/Mist

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 29.82 in
Dewpoint 32°F (0°C)
Visibility 4.00 mi
Last update 21 Feb 4:55 am EST
Extended Forecast for

Mountainside NJ

Winter Storm Warning February 22, 06:00am until February 23, 06:00pm
Click here for hazard details and duration
Winter Storm Warning

  • Overnight

    Overnight: A 20 percent chance of snow. Mostly cloudy, with a low around 34. West wind around 7 mph.

    Low: 34 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 45. West wind around 7 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow between 1am and 4am, then a chance of snow. Mostly cloudy, with a low around 34. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 40%.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Snow, mainly after 7am. Temperature falling to around 31 by 5pm. Wind chill values between 20 and 30. East wind 8 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 35 °F⇓

    Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Areas of blowing snow after 1am. Low around 27. Windy, with a northeast wind 17 to 26 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.

    Low: 27 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow, mainly before 1pm. The snow could be heavy at times. Areas of blowing snow before 1pm. High near 35. Windy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 35 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow. Mostly cloudy, with a low around 34. West wind around 7 mph.
Saturday
Mostly sunny, with a high near 45. West wind around 7 mph.
Saturday Night
A slight chance of rain and snow between 1am and 4am, then a chance of snow. Mostly cloudy, with a low around 34. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 40%.
Sunday
Snow, mainly after 7am. Temperature falling to around 31 by 5pm. Wind chill values between 20 and 30. East wind 8 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Areas of blowing snow after 1am. Low around 27. Windy, with a northeast wind 17 to 26 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.
Monday
Snow, mainly before 1pm. The snow could be heavy at times. Areas of blowing snow before 1pm. High near 35. Windy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 37.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 44.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 41.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
3:41 am EST Feb 21, 2026
Forecast Valid:
5am EST Feb 21, 2026-6pm EST Feb 27, 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