Historical weather data, all-time temperature records, and monthly climate averages for Rochester, NH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Rochester runs cold, with an average high of just 52° and lows still dipping to freezing. That said, the date has a wild range — someone was sweating through 83° in 1928, while 2016 brought a brutal 10° low. There's a 1-in-12 chance of snow today, so don't put the winter gear away just yet.
Rochester's weather has real teeth — 131 years of records span from a scorching 103° in July 1911 to a bone-crushing -35° in January 1935, a swing of 138 degrees. A single summer storm in 2004 dumped 7.7 inches of rain in one day, and an early-spring nor'easter in March 1937 buried the city under 18 inches of snow.
Rochester earns its warmth in a narrow window — mid-July peaks at an average high of 83°, while January bottoms out at 34°. If you're visiting for comfort, aim for June through August; if you're avoiding rain, steer clear of late November, the wettest stretch of the year at over an inch per week.