Stamford averages 15.8 days a year above 90°F, with September the wettest month at 5.21 in of normal rain. The hottest day on record was 104°F on Aug 9, 2001; the coldest, −18°F on Jan 18, 1982. The single biggest 24-hour rain event recorded was 6.12 in on Jun 19, 1972.
Climate and Average Weather Year Round in Stamford
Year-round temperature
In Stamford, the warmest months are June through September, with average daily highs between 76°F and 85°F. The coldest stretch runs December through February, with highs between 38°F and 43°F and overnight lows reaching 22°F.
Rainfall through the year
Rainfall in Stamford averages 4.3 in per month over the long run. September is the wettest at 5.2 in, while February is the driest at 3.1 in.
Days at 90 °F or hotter
Stamford averages 15.8 days per year at 90 °F or hotter. The hottest year on record saw 37 such days (2002); the coolest just 3 (2004).