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.

Fog/Mist

50°F

10°C

Humidity 100%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 50°F (10°C)
Visibility 2.50 mi
Last update 19 Apr 8:46 am EDT
Extended Forecast for

Mountainside NJ

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Today

    Today: Showers. Temperature falling to around 46 by 2pm. Northwest wind 7 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F⇓

    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 39. Northwest wind 3 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 51. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 51 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. Northwest wind 7 to 10 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 54. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.

    High: 54 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Increasing clouds, with a low around 42.

    Low: 42 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Showers. Temperature falling to around 46 by 2pm. Northwest wind 7 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Mostly clear, with a low around 39. Northwest wind 3 to 8 mph.
Monday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 51. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 31. Northwest wind 7 to 10 mph.
Tuesday
Sunny, with a high near 54. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers after 2am. Increasing clouds, with a low around 42.
Wednesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 49.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
4:26 am EDT Apr 19, 2026
Forecast Valid:
9am EDT Apr 19, 2026-6pm EDT Apr 25, 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