Briefing for Flash Flood, Severe Thunderstorm, and Heat Risks through Thursday

Scattered showers and thunderstorms with locally heavy rainfall may lead to areas of flash flooding through tonight. There is potential for isolated severe thunderstorms with damaging wind gusts tonight and Thursday. Hot and very humid conditions are expected Thursday. See this briefing for details on these threats. Read More >

Current conditions at

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

A Few Clouds

79°F

26°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 29.94 in (1014.1 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 Jul 11:53 pm EDT
Extended Forecast for

Boonton NJ

Flood Watch July 17, 12:11am until July 17, 03:00am
Heat Advisory July 17, 10:00am until July 17, 08:00pm
Click here for hazard details and duration
Flood Watch
Heat Advisory
  •  
    Flood Watch July 17, 12:11am until July 17, 03:00am

    NOW until 3:00am Thu

    Flood Watch

  • Overnight

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely before noon, then a slight chance of showers and thunderstorms after 5pm.  Mostly cloudy, then gradually becoming sunny, with a high near 91. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Showers
    Likely then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly between 7pm and 8pm.  Partly cloudy, with a low around 71. West wind around 5 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 83. Northwest wind around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm, mainly after 2am.  Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm.  Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms likely before noon, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 91. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, mainly between 7pm and 8pm. Partly cloudy, with a low around 71. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 83. Northwest wind around 5 mph.
Friday Night
Mostly clear, with a low around 63. Calm wind.
Saturday
A slight chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Saturday Night
Showers likely and possibly a thunderstorm, mainly after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Boonton NJ
 40.92°N 74.44°W (Elev. 499 ft)
4:12 pm EDT Jul 16, 2025
12am EDT Jul 17, 2025-6pm EDT Jul 23, 2025
 
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Additional Resources

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