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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Caldwell, Essex County Airport (KCDW)

Lat: 40.88°NLon: 74.28°WElev: 171ft.

Fair

68°F

20°C

Humidity 47%
Wind Speed Vrbl 5 mph
Barometer 30.20 in (1023.0 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 19 Sep 12:53 pm EDT
Extended Forecast for

Riverdale NJ

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 71. East wind around 5 mph becoming calm.

    High: 71 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Calm wind.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 5pm. High near 68. Southeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 66. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 20%.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.

    High: 62 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 71. East wind around 5 mph becoming calm.
Tonight
Increasing clouds, with a low around 54. Calm wind.
Sunday
Showers, with thunderstorms also possible after 5pm. High near 68. Southeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Partly sunny, with a high near 66. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 20%.
Tuesday
A chance of showers after 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly cloudy, with a high near 62.
Wednesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Riverdale NJ
 40.99°N 74.31°W (Elev. 236 ft)
Last Update:
4:09 am EDT Sep 19, 2026
Forecast Valid:
1pm EDT Sep 19, 2026-6pm EDT Sep 25, 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