Historical weather data, all-time temperature records, and monthly climate averages for Hackensack, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Hackensack typically feels like a cautious step into spring — average highs around 57° with lows still dipping to 39°. But the date has real range: it's hit as warm as 81° back in 2010 and bottomed out at 23° in 1995. Snow is essentially off the table, though there's still a 1-in-4 chance you'll see some rain.
Hackensack runs hot in summer and bitterly cold in winter — the all-time high of 104° in July 2011 and the record low of -7° in January 1984 are 111 degrees apart. The wettest single day on record was September 16, 1999, when 8.18 inches fell, likely tied to Hurricane Floyd. The biggest snowstorm dumped 16 inches on February 7, 1978, during the infamous Blizzard of '78.
If you're planning a visit, mid-July through late August is peak warmth — the hottest week averages a high of 88° around July 16-22, with late July also being the wettest stretch of the year at over an inch of precip per week. Winters are genuinely cold, with January highs averaging just 39°. Spring and fall offer the most comfortable windows, with April and October highs in the low-to-mid 60s.