Climate

Danbury weather by month

Average highs, lows, rain and snow for every month, from 30 years of weather records.

Average temperatures

Best time to visit: May, June, July, when highs are mild and rain is lightest.

Month	High	Low	Rain	Wet days
January	36°F	18°F	3.1 in	11
February	39°F	20°F	2.7 in	10
March	47°F	27°F	3.9 in	11
April	59°F	37°F	3.7 in	12
May	69°F	46°F	3.8 in	14
June	78°F	56°F	4.5 in	13
July	82°F	62°F	4.5 in	13
August	80°F	60°F	4.6 in	14
September	74°F	52°F	4.8 in	14
October	62°F	41°F	4.5 in	13
November	51°F	31°F	3.8 in	11
December	41°F	24°F	4.2 in	12

NOAA U.S. Climate Normals 1991–2020, Danbury Muni Ap, Ct Us (1.9 mi away, 457 ft). Wet days: days with at least 0.01 in of precipitation.

What is the hottest month in Danbury?

July, with an average high of 82°F and low of 62°F.

What is the coldest month in Danbury?

January, with an average low of 18°F and high of 36°F.

When does it rain most in Danbury?

September is the wettest month, averaging 4.8 in of precipitation; the year totals about 48.1 inches.

What is the best time to visit Danbury?

For mild weather (highs between 65°F and 85°F) with the least rain, May, June, July.

Where do these numbers come from?

NOAA’s 1991–2020 U.S. Climate Normals for the Danbury Muni Ap weather station, 1.9 miles from downtown: 30-year averages, not a forecast.