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.

Fog/Mist

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 32°F (0°C)
Visibility 3.00 mi
Last update 4 Mar 6:35 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: Patchy fog before 9am. Otherwise, partly sunny, with a high near 50. Light and variable wind.

    High: 50 °F

    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: A 30 percent chance of rain, mainly after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Thursday

    Thursday: Rain, mainly after 7am. Patchy fog before 10am. High near 44. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain. Low around 39. Northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: A 20 percent chance of rain before 1pm. Cloudy, with a high near 47. Northeast wind around 7 mph.

    High: 47 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Cloudy, with a low around 39.

    Low: 39 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, partly sunny, with a high near 50. Light and variable wind.
Tonight
A 30 percent chance of rain, mainly after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 37. Calm wind.
Thursday
Rain, mainly after 7am. Patchy fog before 10am. High near 44. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 39. Northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 20 percent chance of rain before 1pm. Cloudy, with a high near 47. Northeast wind around 7 mph.
Friday Night
Cloudy, with a low around 39.
Saturday
Mostly cloudy, with a high near 61.
Saturday Night
Showers likely before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 70.
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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:
6:26 am EST Mar 4, 2026
Forecast Valid:
7am EST Mar 4, 2026-6pm EDT Mar 10, 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