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.

Partly Cloudy

31°C

88°F

Humidity 38%
Wind Speed W 22 G 33 km/h
Barometer 29.84 in
Dewpoint 15°C (59°F)
Visibility 16 km
Heat Index31°C (87°F)
Last update 3 Jul 1:45 pm EDT
Extended Forecast for

Mountainside NJ

Severe T-storm Watch until July 3, 10:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until July 3, 10:00pm

    NOW until 10:00pm Thu

    Severe T-storm Watch

  • This Afternoon

    High: 32 °C

    Severe
    Thunderstorms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Mostly clear, with a low around 19. Northwest wind 8 to 11 km/h.

    Low: 19 °C

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Independence Day

    Independence Day: Sunny, with a high near 30. Northwest wind 10 to 13 km/h.

    High: 30 °C

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 18. Northwest wind 5 to 10 km/h becoming calm after midnight.

    Low: 18 °C

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the afternoon.

    High: 31 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 20.

    Low: 20 °C

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 33.

    High: 33 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °C

    Partly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Mostly sunny, with a high near 32. West wind around 14 km/h.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Mostly clear, with a low around 19. Northwest wind 8 to 11 km/h.
Independence Day
Sunny, with a high near 30. Northwest wind 10 to 13 km/h.
Friday Night
Mostly clear, with a low around 18. Northwest wind 5 to 10 km/h becoming calm after midnight.
Saturday
Mostly sunny, with a high near 31. Calm wind becoming south 5 to 10 km/h in the afternoon.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 22.
Monday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 32.
Monday Night
A chance of showers before 8pm, then a chance of showers after 2am. Partly cloudy, with a low around 23. Chance of precipitation is 30%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 31. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 22. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 m)
Last Update:
1:40 pm EDT Jul 3, 2025
Forecast Valid:
1pm EDT Jul 3, 2025-6pm EDT Jul 9, 2025
 
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