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Hazardous Weather Conditions

Current conditions at

Morristown Municipal (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Fog

21°C

70°F

Humidity 100%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 21°C (70°F)
Visibility 0.40 km
Last update 24 Jun 5:55 am EDT
Extended Forecast for

Mountainside NJ

Extreme Heat Warning June 24, 06:10am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 24, 06:10am until June 24, 08:00pm

    NOW until 8:00pm Tue

    Extreme Heat Warning

  • Today

    High: 38 °C

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 26. Northwest wind 5 to 10 km/h.

    Low: 26 °C

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 35. Northwest wind 5 to 11 km/h.

    High: 35 °C

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Northeast wind 3 to 8 km/h.

    Low: 23 °C

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 26. East wind 10 to 13 km/h. Chance of precipitation is 50%.

    High: 26 °C

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.

    Low: 17 °C

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 21.

    High: 21 °C

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 18.

    Low: 18 °C

    Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 38. Light northwest wind becoming west 6 to 11 km/h in the morning.
Tonight
Mostly clear, with a low around 26. Northwest wind 5 to 10 km/h.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 35. Northwest wind 5 to 11 km/h.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Northeast wind 3 to 8 km/h.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 26. East wind 10 to 13 km/h. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Friday
Mostly cloudy, with a high near 21.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 18.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 27.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 m)
Last Update:
3:07 am EDT Jun 24, 2025
Forecast Valid:
6am EDT Jun 24, 2025-6pm EDT Jun 30, 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