Historical weather data, all-time temperature records, and monthly climate averages for Glastonbury, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Glastonbury sits right in the middle of spring's push, with an average high of 54° and a low of 35°—still cold enough that frost isn't out of the question. The date's range across 104 years is striking: a balmy 82° back in 1921 and a bitter 20° low in 1982. There's about a 39% chance of rain today, though snow is nearly off the table at just 2%.
Glastonbury's weather has real teeth at both ends of the thermometer—103° in July 2011 and -24° in February 1943 represent a jaw-dropping 127-degree swing in recorded history. A single day in September 1938 dumped 6.1 inches of rain, likely remnants of the infamous New England Hurricane, and December 1945 buried the town under 17.7 inches of snow in one shot.
Summer is the sweet spot here, with mid-July averaging highs of 85° and the mercury staying comfortable through August at 82°. Winter bottoms out the third week of January at a frigid 35° average high, so plan accordingly. Ironically, the wettest week of the year is right now—early April averages just over an inch of precipitation, making it the soggiest stretch on the calendar.