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Hazardous Weather Conditions

Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 1 Aug 5:55 am EDT
Extended Forecast for

Mountainside NJ

  • Today

    Today: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. South wind 3 to 6 mph.

    Low: 70 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers before 2pm, then a chance of showers after 5pm. Mostly cloudy, with a high near 85. Light south wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 71. Southeast wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 83. Southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 70. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 70. South wind 3 to 6 mph.
Sunday
A slight chance of showers before 2pm, then a chance of showers after 5pm. Mostly cloudy, with a high near 85. Light south wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 71. Southeast wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. High near 83. Southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 70. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
2:27 am EDT Aug 1, 2026
Forecast Valid:
6am EDT Aug 1, 2026-6pm EDT Aug 7, 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