Pittsburgh’s Sunday high is forecast near 74 degrees, according to the National Weather Service forecast.
A Warm Sunday Afternoon
The afternoon high is forecast near 74 degrees, the National Weather Service says.
Sunday night is expected to be partly cloudy, with a low around 50 to 51 degrees. The forecast remains dry, according to the National Weather Service, so outdoor plans across the Pittsburgh area should avoid any weather-related interruptions.
Sunny Skies Bring A Cooler Monday
Monday will be sunny, with a high near 66 degrees and northwest winds between 6 and 13 mph. Clear skies Monday night could send temperatures down to around 42 degrees, making for a crisp start to Tuesday, according to the National Weather Service forecast.
Tuesday will remain sunny with another high near 65, followed by a low around 45 Tuesday night. The broader forecast stays dry through the rest of the week, with highs returning to the low 70s from Wednesday through Friday and mostly sunny skies expected.
Long-Term Temperature Context
The available statewide data do not specify autumn trends in southwestern Pennsylvania. NOAA’s Pennsylvania State Climate Summaries 2022 says temperatures across the state have risen almost 2°F since the beginning of the 20th century; that broad historical pattern does not determine this weekend’s forecast.
NOAA’s climate normals put a single forecast in perspective: they are 30-year averages of observations, not predictions for a particular day. The current standard period is 1991–2020, so a mild Sunday or a sharp overnight cooldown can differ from the longer-term baseline without contradicting it. The normals are designed to describe typical conditions over time, rather than determine how any one October weekend will unfold. NOAA’s explanation of climate normals details how the averages are calculated.
No Weather Alerts Posted
No watches, warnings or advisories are listed for Pittsburgh or Allegheny County. The regional list does include a Small Craft Advisory for Lake Erie waters and a Freeze Watch for four northern Pennsylvania counties, but neither applies to the Pittsburgh area, according to the National Weather Service alert listing.
The regional alert list can include hazards far from the city: the active Small Craft Advisory covers nearshore Lake Erie waters, while a Freeze Watch applies to McKean, Potter, Elk and Cameron counties in northern Pennsylvania. Neither product covers Pittsburgh or Allegheny County, underscoring why alert status is best checked for the specific location rather than inferred from a regional map. The National Weather Service’s Pittsburgh-office alert listing identifies the affected areas.
