Historical weather data, all-time temperature records, and monthly climate averages for Bristol, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Bristol sits right on the edge of winter's retreat — the average high is just 52° with lows still dipping to freezing. Across 90 years of records, the date has swung wildly, from a 75° warm spell in 1974 down to a brutal 16° in 1995. There's a 41% chance of rain today, though snow is nearly off the table at just 2%.
Bristol plays for keeps when it comes to weather extremes — the thermometer has hit 100° as recently as June 2024 and cratered to -25° on Valentine's Day 2016, a 125-degree swing across the record books. Hurricane Diane put up the wettest single day ever in August 1955 with 12.77 inches of rain, and the Blizzard of 2013 buried the city under 26 inches of snow in one shot.
Summer is Bristol's sweet spot, peaking the week of July 16-22 with average highs of 85°, while mid-January is the depths of winter at a frigid 34°. If you're watching for rain, late August is the wettest stretch of the year, averaging over an inch a week. Spring and fall offer a wide temperature range — April averages 59° and October 63° — making layers essential.