Historical weather data, all-time temperature records, and monthly climate averages for Dumont, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4 in Dumont typically lands in that awkward shoulder season—expect a high around 57° and a low near 40°, with a 41% chance of rain. The date's history spans a wild 50-degree range, from a balmy 77° back in 1974 to a teeth-chattering 27° low just one year later in 1975.
Dumont has seen some serious extremes over its 57 years of records—a scorching 104° in July 2011 and a brutal -7° in January 1984, a swing of 111 degrees. The wettest single day on record dumped 8.18 inches during a September 1999 storm, while a February 1978 snowstorm buried the borough under 16 inches.
Summer is the main event here, with highs peaking around 88° in late July and the wettest stretch of the year arriving right on summer's heels in late July as well. Winters are cold and grey, with January and February highs hovering in the upper 30s to low 40s. If you're planning a visit, May through June offers a sweet spot—warm enough at 72–81° with less rain than the peak summer weeks.