National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

Mostly Cloudy

81°F

27°C

Humidity 58%
Wind Speed NW 9 mph
Barometer 29.97 in (1015.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 May 6:53 pm EDT
Extended Forecast for

Lake Hiawatha NJ

Severe T-storm Watch until May 20, 09:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch until May 20, 09:00pm

    NOW until 9:00pm Wed

    Severe T-storm Watch

  • Tonight

    Low: 54 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly before 10am. Cloudy, with a high near 64. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Calm wind becoming east around 5 mph.

    Low: 50 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 68. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 2am. Cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers, mainly after 8am. High near 58. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 48. Chance of precipitation is 90%.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Showers likely before 2pm. Cloudy, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers and thunderstorms before 4am, then a chance of showers. Some of the storms could be severe. Low around 54. North wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 10am. Cloudy, with a high near 64. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Calm wind becoming east around 5 mph.
Friday
Mostly sunny, with a high near 68. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Friday Night
A chance of showers after 2am. Cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers, mainly after 8am. High near 58. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Showers. Low around 48. Chance of precipitation is 90%.
Sunday
Showers likely before 2pm. Cloudy, with a high near 66. Chance of precipitation is 60%.
Sunday Night
A chance of showers after 8pm. Cloudy, with a low around 55. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hiawatha NJ
 40.87°N 74.36°W (Elev. 194 ft)
Last Update:
4:08 pm EDT May 20, 2026
Forecast Valid:
7pm EDT May 20, 2026-6pm EDT May 27, 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