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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

Fair

55°F

13°C

Humidity 42%
Wind Speed NW 7 mph
Barometer 29.93 in (1013.9 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 21 Mar 5:53 pm EDT
Extended Forecast for

Lake Hiawatha NJ

  • Tonight

    Tonight: Increasing clouds, with a low around 41. North wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 69. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers after 8pm. Low around 40. North wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Showers

  • Monday

    Monday: A chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 50. North wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 29. Northwest wind 5 to 10 mph.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 41. North wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 69. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms, then showers after 8pm. Low around 40. North wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 50. North wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly clear, with a low around 29. Northwest wind 5 to 10 mph.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
A chance of rain after 8am. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hiawatha NJ
 40.89°N 74.39°W (Elev. 299 ft)
Last Update:
4:09 pm EDT Mar 21, 2026
Forecast Valid:
6pm EDT Mar 21, 2026-6pm EDT Mar 28, 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