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.

Overcast

69°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 29.90 in (1012.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 23 Aug 1:53 am EDT
Extended Forecast for

Mahwah NJ

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms, mainly between 11am and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Light west wind.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Light west wind.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

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

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms, mainly between 11am and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Mostly clear, with a low around 58. Light west wind.
Monday
Sunny, with a high near 79. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. Light west wind.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 82.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 83.
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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:
10:43 pm EDT Aug 22, 2026
Forecast Valid:
2am EDT Aug 23, 2026-6pm EDT Aug 29, 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