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.

Fair

19°F

-7°C

Humidity 93%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 15 Feb 2:55 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after 4pm. Mostly cloudy, with a high near 40. Calm wind becoming east around 6 mph in the afternoon.

    High: 40 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow, mainly between 10pm and 4am. Low around 30. Northeast wind around 7 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 30 °F

    Snow

  • Washington's Birthday

    Washington's Birthday: A 30 percent chance of snow before 7am. Mostly cloudy, with a high near 38. Wind chill values between 25 and 35. Northeast wind 3 to 7 mph.

    High: 38 °F

    Chance Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 30. Calm wind. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Cloudy, with a high near 40. Chance of precipitation is 60%.

    High: 40 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain before 1am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 26. Calm wind.
Sunday
A 20 percent chance of snow after 4pm. Mostly cloudy, with a high near 40. Calm wind becoming east around 6 mph in the afternoon.
Sunday Night
Snow, mainly between 10pm and 4am. Low around 30. Northeast wind around 7 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Washington's Birthday
A 30 percent chance of snow before 7am. Mostly cloudy, with a high near 38. Wind chill values between 25 and 35. Northeast wind 3 to 7 mph.
Monday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 30. Calm wind. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of rain before 1am. Mostly cloudy, with a low around 35.
Thursday
Mostly cloudy, with a high near 43.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 33.
Friday
Rain likely. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
1:46 am EST Feb 15, 2026
Forecast Valid:
3am EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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