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.

Clear

73°F

23°C

Humidity 44%
Wind Speed SW 8 mph
Barometer 29.70 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 26 Mar 6:57 pm EDT
Extended Forecast for

Mountainside NJ

  • Tonight

    Tonight: Showers, mainly after 11pm. Low around 50. Southwest wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers likely, mainly before 11am. Mostly cloudy, with a temperature falling to around 49 by 11am. North wind 9 to 13 mph. Chance of precipitation is 60%.

    High: 54 °F⇓

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29. Wind chill values between 20 and 25. North wind 6 to 9 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 42. Wind chill values between 20 and 30. Northwest wind 11 to 15 mph.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Northwest wind 5 to 7 mph becoming light and variable in the evening.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Showers, mainly after 11pm. Low around 50. Southwest wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly before 11am. Mostly cloudy, with a temperature falling to around 49 by 11am. North wind 9 to 13 mph. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 29. Wind chill values between 20 and 25. North wind 6 to 9 mph.
Saturday
Sunny, with a high near 42. Wind chill values between 20 and 30. Northwest wind 11 to 15 mph.
Saturday Night
Mostly clear, with a low around 28. Northwest wind 5 to 7 mph becoming light and variable in the evening.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 61.
Monday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 47.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 63.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 51.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 72.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 50.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 69.
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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:
4:04 pm EDT Mar 26, 2026
Forecast Valid:
7pm EDT Mar 26, 2026-6pm EDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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