Pittsburgh averages 17.8 days a year above 90°F, with July the wettest month at 3.64 in of normal rain. The hottest day on record was 102°F on Jul 15, 1995; the coldest, −13°F on Jan 21, 1994. The single biggest 24-hour rain event recorded was 5.97 in on Jun 18, 2009.
Climate and Average Weather Year Round in Pittsburgh
Year-round temperature
In Pittsburgh, the warmest months are June through September, with average daily highs between 78°F and 85°F. The coldest stretch runs December through February, with highs between 39°F and 43°F and overnight lows reaching 21°F.
Rainfall through the year
Rainfall in Pittsburgh averages 3.2 in per month over the long run. July is the wettest at 3.6 in, while February is the driest at 2.8 in.
Days at 90 °F or hotter
Pittsburgh averages 17.8 days per year at 90 °F or hotter. The hottest year on record saw 52 such days (2016); the coolest just 1 (2026).
Precipitation this year
As of May 28, Pittsburgh has received 13.3 in of precipitation this year — 15% below the long-term normal for this point in the year (15.7 in).