Historical weather data, all-time temperature records, and monthly climate averages for Dover, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Dover lands right in the swing of spring — expect a high around 55° and a low near 35°, with about a 1-in-3 chance of rain. The date has seen wild swings over 123 years of records, from a balmy 79° in 1950 to a teeth-chattering 18° in 1995. Snow is essentially off the table at this point, with just a 1% chance.
Dover's weather has real teeth at the extremes — the mercury has soared to 104° and plunged to -21°, a jaw-dropping 125-degree range across its 133-year record. A single day in July 1919 dumped 7.45 inches of rain, and the Blizzard of 1996 buried the town under 22 inches of snow in one shot.
Dover runs warm from late June through August, peaking the week of July 16–22 with average highs of 85° — ideal summer territory. Winters are cold and genuine, with late January and early February averaging just 36° for a high. If you're chasing dry weather, avoid late July, when Dover picks up more than an inch of rain per week on average.