Historical weather data, all-time temperature records, and monthly climate averages for Farmington, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Farmington sits right at the edge of spring — average highs of 52° with lows still dipping to freezing. The date has a 59-degree swing in its history, from a balmy 75° in 1974 down to a brutal 16° in 1995, so don't put the jacket away just yet.
Farmington's weather has serious range: a scorching 100° recorded just last year on June 24, 2025, and a bone-chilling -25° on Valentine's Day 2016. The town also saw 26 inches of snow fall in a single day in February 2013 and nearly 13 inches of rain from one storm in August 1955.
Summer is the sweet spot, with highs peaking around 83–85° in mid-July before cooling into the pleasant 60s by October. Winters are cold and real — January and February highs barely crack the mid-30s. August is the wettest stretch of the year, so pack accordingly if you're visiting then.