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

81°F

27°C

Humidity 66%
Wind Speed SW 8 mph
Barometer 29.90 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 15 Jul 12:55 am EDT
Extended Forecast for

Summit NJSimilar City Names

Heat Advisory July 15, 01:15am until July 15, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 15, 01:15am until July 15, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • Overnight

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Patchy smoke between 9am and 5pm. Mostly sunny, with a high near 98. Heat index values as high as 103. West wind 6 to 11 mph, with gusts as high as 24 mph.

    High: 98 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 11pm and 2am. Widespread smoke, mainly between 8pm and 2am. Mostly cloudy, with a low around 73. Northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Areas of smoke before 9am. Mostly sunny, with a high near 91. Light northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 91 °F

    Areas Smoke
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. Northwest wind 3 to 7 mph.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 75. West wind 7 to 9 mph, with gusts as high as 20 mph.
Wednesday
Patchy smoke between 9am and 5pm. Mostly sunny, with a high near 98. Heat index values as high as 103. West wind 6 to 11 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of showers between 11pm and 2am. Widespread smoke, mainly between 8pm and 2am. Mostly cloudy, with a low around 73. Northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 20%.
Thursday
Areas of smoke before 9am. Mostly sunny, with a high near 91. Light northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 71. Northwest wind 3 to 7 mph.
Friday
Mostly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 68.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 87.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summit NJSimilar City Names
 40.71°N 74.37°W (Elev. 400 ft)
Last Update:
6:43 pm EDT Jul 14, 2026
Forecast Valid:
1am EDT Jul 15, 2026-6pm EDT Jul 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation