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.

Fair

66°F

19°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 May 4:55 am EDT
Extended Forecast for

Millburn NJ

Heat Advisory May 20, 05:19am until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 20, 05:19am until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Today

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 11pm, then a chance of showers. Mostly cloudy, with a low around 57. Northwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 11am. Cloudy, with a high near 67. Northeast wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Decreasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 66. Northeast wind around 9 mph becoming southeast in the afternoon.

    High: 66 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 2am. Cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. West wind 7 to 13 mph, with gusts as high as 23 mph.
Tonight
Showers likely and possibly a thunderstorm before 11pm, then a chance of showers. Mostly cloudy, with a low around 57. Northwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 11am. Cloudy, with a high near 67. Northeast wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 52. Light and variable wind.
Friday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 66. Northeast wind around 9 mph becoming southeast in the afternoon.
Friday Night
Showers likely, mainly after 2am. Cloudy, with a low around 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers. High near 57. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 50. Chance of precipitation is 80%.
Sunday
Showers likely, mainly before 8am. Cloudy, with a high near 64. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers after 8pm. Cloudy, with a low around 54.
Memorial Day
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Millburn NJ
 40.75°N 74.3°W (Elev. 400 ft)
Last Update:
2:20 am EDT May 20, 2026
Forecast Valid:
5am EDT May 20, 2026-6pm EDT May 26, 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