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

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

Mostly Cloudy

74°F

23°C

Humidity 62%
Wind Speed Vrbl 3 mph
Barometer 29.87 in (1011.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 23 Aug 8:53 pm EDT
Extended Forecast for

Mahwah NJ

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 59. West wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. West wind 3 to 5 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West wind 3 to 7 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. Light northwest wind.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Thursday

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

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 59. West wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 57. West wind 3 to 5 mph.
Tuesday
Sunny, with a high near 80. West wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 58. Light northwest wind.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Friday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mahwah NJ
 41.09°N 74.17°W (Elev. 299 ft)
Last Update:
2:20 pm EDT Aug 23, 2026
Forecast Valid:
9pm EDT Aug 23, 2026-6pm EDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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