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

45°F

7°C

Humidity 93%
Wind Speed NW 10 G 22 mph
Barometer 29.74 in
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill40°F (4°C)
Last update 12 Mar 8:55 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: Rain likely before 2pm, then snow likely, possibly mixed with rain. Cloudy, with a temperature falling to around 39 by 5pm. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 55 °F⇓

    Rain Likely
    then
    Rain/Snow
    Likely

  • Tonight

    Tonight: Snow likely, possibly mixed with rain before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 6 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    Likely then
    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 47. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 26 mph.

    High: 47 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. Southwest wind around 14 mph.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51. West wind around 15 mph, with gusts as high as 28 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 49.

    High: 49 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 63. Chance of precipitation is 90%.

    High: 63 °F

    Rain

Detailed Forecast

Today
Rain likely before 2pm, then snow likely, possibly mixed with rain. Cloudy, with a temperature falling to around 39 by 5pm. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
Snow likely, possibly mixed with rain before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 6 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 47. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Friday Night
Partly cloudy, with a low around 37. Southwest wind around 14 mph.
Saturday
Sunny, with a high near 51. West wind around 15 mph, with gusts as high as 28 mph.
Saturday Night
Increasing clouds, with a low around 34.
Sunday
Cloudy, with a high near 49.
Sunday Night
Rain, mainly after 2am. Low around 44. Chance of precipitation is 80%.
Monday
Rain. High near 63. Chance of precipitation is 90%.
Monday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 40. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
7:04 am EDT Mar 12, 2026
Forecast Valid:
9am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation