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.

Thunderstorm Heavy Rain

48°F

9°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 29.48 in
Dewpoint 48°F (9°C)
Visibility 4.00 mi
Wind Chill46°F (8°C)
Last update 12 Nov 6:45 pm EST
Extended Forecast for

Mountainside NJ

Flood Advisory until November 12, 08:00pm
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until November 12, 08:00pm

    NOW until 8:00pm Thu

    Flood Advisory

  • This Afternoon

    High: 54 °F

    Showers

  • Tonight

    Tonight: Showers before midnight, then rain after midnight. Low around 42. North wind 9 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Showers

  • Friday

    Friday: Rain, mainly before 4pm. High near 44. North wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain then
    Rain Likely

  • Friday Night

    Friday Night: A 40 percent chance of rain before 10pm. Cloudy, with a low around 34. Northwest wind around 7 mph.

    Low: 34 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 46. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers. Steady temperature around 54. Northeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers before midnight, then rain after midnight. Low around 42. North wind 9 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 4pm. High near 44. North wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of rain before 10pm. Cloudy, with a low around 34. Northwest wind around 7 mph.
Saturday
Partly sunny, with a high near 46. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Clear, with a low around 35.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Clear, with a low around 37.
Thursday
Sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
5:04 pm EST Nov 12, 2026
Forecast Valid:
5pm EST Nov 12, 2026-6pm EST Nov 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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