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

41°F

5°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 30.22 in
Dewpoint 41°F (5°C)
Visibility 2.50 mi
Wind Chill36°F (2°C)
Last update 5 Mar 4:48 pm EST
Extended Forecast for

Mountainside NJ

  • This Afternoon

    This Afternoon: A 50 percent chance of rain. Cloudy, with a high near 43. East wind around 7 mph.

    High: 43 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly between 7pm and 4am. Low around 36. Northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Friday

    Friday: Cloudy, with a high near 44. Northeast wind around 7 mph.

    High: 44 °F

    Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 37. Light northeast wind.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: Cloudy, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.

    High: 56 °F

    Cloudy

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a temperature rising to around 55 by 3am. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F⇑

    Rain Likely

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Cloudy, with a high near 43. East wind around 7 mph.
Tonight
Rain, mainly between 7pm and 4am. Low around 36. Northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Cloudy, with a high near 44. Northeast wind around 7 mph.
Friday Night
A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 37. Light northeast wind.
Saturday
Cloudy, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Rain likely. Mostly cloudy, with a temperature rising to around 55 by 3am. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 70.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
1:01 pm EST Mar 5, 2026
Forecast Valid:
5pm EST Mar 5, 2026-6pm EDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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