Historical weather data, all-time temperature records, and monthly climate averages for Waterbury, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Waterbury sits right in that in-between stretch of spring — expect a high near 54° and a low around 33°, with a real chance of frost overnight. There's a 39% shot of rain, though snow is basically off the table at this point. The date has seen everything from a balmy 69° back in 1948 to a brutal 18° low in 1995, so pack layers.
Waterbury's weather has real teeth on both ends — the city has baked at 104° on July 4th, 1949, and shivered at -24° on February 16th, 1943, a swing of 128 degrees. A single day in September 1960 dropped 6.7 inches of rain, and a February 1978 storm buried the city under 19.4 inches of snow in 24 hours.
Summer is the sweet spot, with highs peaking around 84-85° during the third week of July, while January and early February are the ones to brace for — average highs barely crack 36-37°. You're actually visiting during Waterbury's wettest week of the year; the first week of April averages 1.28 inches of precipitation, so an umbrella is non-negotiable.