Historical weather data, all-time temperature records, and monthly climate averages for Derry, NH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Derry sits right on the edge of spring — expect a high around 50° and a low near 34°, with nearly a coin-flip chance of rain. The date has seen wild swings over the years, from a balmy 75° in 2010 to a brutal 13° low back in 1954. Snow is still technically on the table, with a 7% chance.
Derry's weather has some serious range — from a scorching 103° on July 22, 2011, to a bone-chilling -20° on February 13, 1967, that's a 123-degree spread. The wettest single day on record dumped nearly 5 inches on September 11, 1954, while the snowiest dropped 16.6 inches in a single March 2018 storm.
Derry peaks in the heat late July, with average highs around 85°, and bottoms out in mid-January at a frigid 33°. Spring is the wettest stretch, with late March into early April averaging nearly an inch of precipitation per week. For the best of all worlds, aim for September — still warm at 75° and drying out fast after the soggy spring.