Historical weather data, all-time temperature records, and monthly climate averages for Danbury, CT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4 in Danbury lands right in the awkward middle of spring — average highs of 53° with lows still dipping to 33°. There's a 40% chance of rain today, and don't rule out a stray snowflake: this date has a 7% snow probability, with the coldest low on record hitting 15° back in 1943. The flip side? A 76° high in 1950 shows this day can also feel like May.
Danbury's weather has serious range. The thermometer has swung from a brutal -18° in January 1994 all the way up to 106° in July 1995 — a 124-degree spread over the station's history. The wettest single day on record dumped 9.55 inches on September 16, 1999, and a 1983 February storm buried the city under 24 inches of snow in one shot.
Summer is the sweet spot, with mid-July highs averaging 86° and the warmest week of the year running July 16–22. Winters are genuinely cold — January highs barely crack 36° during the coolest stretch in mid-month. Plan around late September if you're watching rainfall: it's the wettest week of the year, averaging over an inch of precipitation.