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.

Partly Cloudy

16°F

-9°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 19 Jan 7:45 pm EST
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Mostly clear, with a low around 13. Wind chill values between zero and 5. West wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 21. Wind chill values between zero and 10. West wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 21 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 8. West wind 5 to 8 mph becoming calm after midnight.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. Wind chill values between 10 and 20. Calm wind becoming south 5 to 8 mph in the morning.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28. South wind around 8 mph.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 13. Wind chill values between zero and 5. West wind 8 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 21. Wind chill values between zero and 10. West wind 10 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 8. West wind 5 to 8 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 32. Wind chill values between 10 and 20. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 28. South wind around 8 mph.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 30.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Mostly cloudy and cold, with a high near 18.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8.
Sunday
A 30 percent chance of snow. Mostly cloudy and cold, with a high near 18.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8.
Monday
Partly sunny, with a high near 21.
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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:
7:14 pm EST Jan 19, 2026
Forecast Valid:
8pm EST Jan 19, 2026-6pm EST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation