Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation. Read More >

Current conditions at

Morristown Municipal (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Overcast

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 18 Jul 4:55 am EDT
Extended Forecast for

3 Miles WNW Morristown NJ

Excessive Heat Watch July 19, 12:00pm until July 21, 10:00pm
Click here for hazard details and duration
Excessive Heat Watch
  • Overnight

    Overnight: A chance of showers.  Patchy fog.  Otherwise, cloudy, with a low around 72. Calm wind.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Chance
    Showers and
    Patchy Fog

    Low: 72 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rain.  Patchy fog before 8am. High near 83. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain
    and Patchy
    Fog then
    Heavy Rain

    High: 83 °F

  • Thursday
    Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 69. Northeast wind 3 to 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely then
    Chance
    Showers and
    Patchy Fog

    Low: 69 °F

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    Patchy Fog
    then Mostly
    Sunny

    High: 94 °F

  • Friday
    Night

    Friday Night: A slight chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 76 °F

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 97.

    Hot

    High: 97 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 77.

    Partly Cloudy

    Low: 77 °F

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 96. Chance of precipitation is 30%.

    Mostly Sunny
    then Chance
    T-storms

    High: 96 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 73. Chance of precipitation is 40%.

    Chance
    T-storms

    Low: 73 °F

Detailed Forecast

Overnight
A chance of showers. Patchy fog. Otherwise, cloudy, with a low around 72. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rain. Patchy fog before 8am. High near 83. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 69. Northeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Mostly sunny and hot, with a high near 97.
Saturday Night
Partly cloudy, with a low around 77.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
3 Miles WNW Morristown NJ
 40.8°N 74.52°W (Elev. 400 ft)
3:53 am EDT Jul 18, 2019
5am EDT Jul 18, 2019-6pm EDT Jul 24, 2019
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database