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

74°F

23°C

Humidity 91%
Wind Speed Calm
Barometer 29.85 in (1011.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 18 Aug 12:53 am EDT
Extended Forecast for

Mahwah NJ

  • Overnight

    Overnight: A 20 percent chance of showers before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. North wind 3 to 5 mph.

    High: 85 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

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

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. Light west wind.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers after 2pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 67. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. North wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 67. Light west wind.
Thursday
A 50 percent chance of showers after 2pm. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 62.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 79.
Saturday Night
Showers likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Sunday
Showers likely. Partly sunny, with a high near 79. Chance of precipitation is 60%.
Sunday Night
Showers likely. Partly cloudy, with a low around 61. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 79.
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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:
4:44 pm EDT Aug 17, 2026
Forecast Valid:
1am EDT Aug 18, 2026-6pm EDT Aug 24, 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