Climate

Stamford 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, July, August, when highs are mild and rain is lightest.

Month	High	Low	Rain	Snow	Wet days
January	38°F	22°F	4.3 in	9.1 in	11
February	41°F	23°F	3.1 in	11.9 in	8
March	49°F	30°F	4.7 in	5.9 in	10
April	62°F	40°F	4.4 in	0.50 in	12
May	72°F	50°F	4.1 in	0.00 in	12
June	80°F	59°F	4.9 in	0.00 in	12
July	85°F	64°F	3.8 in	0.00 in	9
August	83°F	63°F	3.8 in	0.00 in	9
September	76°F	56°F	5.2 in	0.00 in	9
October	64°F	45°F	4.6 in	0.00 in	10
November	53°F	35°F	4.2 in	0.80 in	10
December	43°F	27°F	4.4 in	5.8 in	11

NOAA U.S. Climate Normals 1991–2020, Stamford 5 N, Ct Us (3.1 mi away, 190 ft). Wet days: days with at least 0.01 in of precipitation.

What is the hottest month in Stamford?

July, with an average high of 85°F and low of 64°F.

What is the coldest month in Stamford?

January, with an average low of 22°F and high of 38°F.

When does it rain most in Stamford?

September is the wettest month, averaging 5.2 in of precipitation; the year totals about 51.5 inches.

Does it snow in Stamford?

Yes. Snowfall averages about 34 inches a year, mostly in February and January.

What is the best time to visit Stamford?

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

Where do these numbers come from?

NOAA’s 1991–2020 U.S. Climate Normals for the Stamford 5 N weather station, 3.1 miles from downtown: 30-year averages, not a forecast.