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.

Partly Cloudy

28°F

-2°C

Humidity 43%
Wind Speed S 14 G 21 mph
Barometer 30.33 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 21 Jan 1:45 pm EST
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 32. Wind chill values between 15 and 20. South wind around 7 mph.

    High: 32 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 32 by 2am. Wind chill values between 20 and 25. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 28 °F⇑

    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 41. Wind chill values between 25 and 35. West wind 9 to 13 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23. West wind 6 to 8 mph.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33. West wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 17.

    High: 17 °F

    Cold

  • Saturday Night

    Saturday Night: Snow likely after 1am. Mostly cloudy, with a low around 10. Chance of precipitation is 70%.

    Low: 10 °F

    Mostly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: Snow. High near 19. Chance of precipitation is 90%.

    High: 19 °F

    Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 32. Wind chill values between 15 and 20. South wind around 7 mph.
Tonight
A 20 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 32 by 2am. Wind chill values between 20 and 25. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 41. Wind chill values between 25 and 35. West wind 9 to 13 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 23. West wind 6 to 8 mph.
Friday
Partly sunny, with a high near 33. West wind 6 to 13 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Partly sunny and cold, with a high near 17.
Saturday Night
Snow likely after 1am. Mostly cloudy, with a low around 10. Chance of precipitation is 70%.
Sunday
Snow. High near 19. Chance of precipitation is 90%.
Sunday Night
Snow likely. Cloudy, with a low around 14. Chance of precipitation is 70%.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Sunny, with a high near 21.
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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:
12:34 pm EST Jan 21, 2026
Forecast Valid:
2pm EST Jan 21, 2026-6pm EST Jan 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation