Historical weather data, all-time temperature records, and monthly climate averages for Harlem, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Harlem typically lands in that awkward shoulder season — expect a cool 55° high and 39° low, with a 35% shot at rain. The date has seen wild swings over 157 years of records, from a balmy 80° back in 1928 all the way down to a brutal 20° in 1874. Snow is basically off the table at just a 3% chance, so at least winter is truly behind us.
Harlem's weather history is not for the faint of heart — the mercury has swung from a scorching 106° in July 1936 to a bone-chilling -15° in February 1934, a range of 121 degrees. The wettest single day on record dumped 8.28 inches of rain on September 23, 1882, while a January 2016 snowstorm buried the neighborhood under 27.3 inches in a single day.
Summer is the main event here, with highs peaking around 84–85° in mid-to-late July — and that's also the wettest stretch of the year, averaging over an inch of rain per week. If you're cold-averse, avoid late January through early February, when average highs barely scrape 37°. Spring and fall offer the sweet spot, with comfortable 60s in April and 65° in October.