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

34°F

1°C

Humidity 100%
Wind Speed N 3 mph
Barometer 30.00 in
Dewpoint 34°F (1°C)
Visibility 7.00 mi
Last update 19 Feb 5:55 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: Cloudy, with a high near 40. East wind around 7 mph.

    High: 40 °F

    Cloudy

  • Tonight

    Tonight: A chance of rain between 10pm and 4am, then rain likely, possibly mixed with sleet. Cloudy, with a low around 34. East wind 6 to 8 mph. Chance of precipitation is 70%. Little or no sleet accumulation expected.

    Low: 34 °F

    Slight Chance
    Rain then
    Rain/Sleet
    Likely

  • Friday

    Friday: Rain likely, possibly mixed with sleet before 7am, then rain. High near 40. East wind 6 to 9 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.

    High: 40 °F

    Rain/Sleet
    then Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. North wind around 6 mph becoming west after midnight.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain after 1pm. Partly sunny, with a high near 45. Northwest wind 5 to 8 mph.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Cloudy, with a high near 36.

    High: 36 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Cloudy, with a low around 28.

    Low: 28 °F

    Chance Snow

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

Detailed Forecast

Today
Cloudy, with a high near 40. East wind around 7 mph.
Tonight
A chance of rain between 10pm and 4am, then rain likely, possibly mixed with sleet. Cloudy, with a low around 34. East wind 6 to 8 mph. Chance of precipitation is 70%. Little or no sleet accumulation expected.
Friday
Rain likely, possibly mixed with sleet before 7am, then rain. High near 40. East wind 6 to 9 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.
Friday Night
A 30 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. North wind around 6 mph becoming west after midnight.
Saturday
A 20 percent chance of rain after 1pm. Partly sunny, with a high near 45. Northwest wind 5 to 8 mph.
Saturday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 36.
Sunday Night
A 50 percent chance of snow. Cloudy, with a low around 28.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 37.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 39.
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:
1:10 am EST Feb 19, 2026
Forecast Valid:
6am EST Feb 19, 2026-6pm EST Feb 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