Weather forecast for: Allendale NJ
Last Update: 2:24 pm EDT Aug 29, 2026
Overnight: Partly cloudy, with a low around 59. Calm wind.
Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Calm wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 50%.
Monday: A slight chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 83. Calm wind. Chance of precipitation is 30%.
Monday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 67. Calm wind.
Tuesday: Showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday: A 50 percent chance of showers after 2pm. Mostly cloudy, with a high near 85.
Wednesday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 84.
Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Friday: Mostly sunny, with a high near 81.
Friday Night: Partly cloudy, with a low around 62.
Saturday: Mostly sunny, with a high near 79.
WeatherWorld.com
