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.

Mostly Cloudy and Breezy

37°F

3°C

Humidity 33%
Wind Speed W 21 G 29 mph
Barometer 29.96 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 17 Mar 5:45 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Scattered flurries before 11pm. Partly cloudy, with a low around 24. Northwest wind 7 to 16 mph, with gusts as high as 29 mph.

    Low: 24 °F

    Scattered
    Flurries

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 40. Wind chill values between 20 and 30. Northwest wind around 5 mph becoming calm in the morning.

    High: 40 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. South wind around 6 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the morning.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers after 2am. Mostly cloudy, with a low around 35. Southeast wind 3 to 6 mph.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Friday

    Friday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Scattered flurries before 11pm. Partly cloudy, with a low around 24. Northwest wind 7 to 16 mph, with gusts as high as 29 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 40. Wind chill values between 20 and 30. Northwest wind around 5 mph becoming calm in the morning.
Wednesday Night
Partly cloudy, with a low around 28. South wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
A 30 percent chance of snow showers after 2am. Mostly cloudy, with a low around 35. Southeast wind 3 to 6 mph.
Friday
Partly sunny, with a high near 54.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39.
Sunday
Mostly cloudy, with a high near 59.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Mostly sunny, with a high near 46.
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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:
2:58 pm EDT Mar 17, 2026
Forecast Valid:
6pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
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Additional Resources

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Chance of Precipitation