Weather
Western Pennsylvania Weather: 30s at Night, 60s by Day, Oct. 21-25
PITTSBURGH, PA — Residents across Pittsburgh and surrounding communities in Allegheny County can expect a stretch of chilly overnight temperatures this week, with lows falling into the mid 30s before
By Miles Carter · 2026-10-21T08:36:02.174Z
PITTSBURGH, PA — Residents across Pittsburgh and surrounding communities in Allegheny County can expect a stretch of chilly overnight temperatures this week, with lows falling into the mid 30s before a sunny weekend brings afternoon temperatures back into the 60s. Friday night, October 23, is expected to be especially chilly, with temperatures dropping to approximately 34 degrees.
According to the National Weather Service in Pittsburgh, mostly clear skies and relatively light winds will accompany the cooler overnight conditions. Despite the chilly nights, daytime temperatures will remain comparatively comfortable, reaching the lower to middle 60s through Saturday before climbing to 67 degrees Sunday.
Temperatures Drop Into the 30s The most noticeable weather development will occur overnight, when temperatures fall sharply compared with afternoon highs.
Wednesday night is expected to reach approximately 35 degrees, followed by a somewhat milder Thursday night near 40 degrees.
By Friday night, temperatures could fall to 34 degrees, just two degrees above the freezing mark.
Although the forecast does not establish an official frost or freeze warning, residents with temperature sensitive plants may want to monitor updated overnight forecasts.
The colder conditions could also be noticeable for anyone leaving home early in the morning, particularly before temperatures begin recovering after sunrise.
Five Day Pittsburgh Weather Outlook Wednesday 10/21: Sunny, with a high near 64 degrees and light north winds. Mostly clear overnight, with a low around 35 degrees and calm winds.
Thursday 10/22: Mostly sunny, with a high near 64 degrees. Calm winds becoming northwest at 5 to 7 mph during the afternoon. Mostly clear overnight, with temperatures falling to approximately 40 degrees.
Friday 10/23: Sunny, with a high near 61 degrees. Light east winds around 6 mph during the morning. Clear overnight, with temperatures falling to approximately 34 degrees.
Saturday 10/24: Sunny, with a high near 64 degrees. Clear skies continue overnight, with a low around 36 degrees. Dry weather should support outdoor activities throughout the day.
Sunday 10/25: Sunny, with a high near 67 degrees. Mostly clear overnight, with temperatures falling to approximately 40 degrees.
Sunny Weekend Ahead for Western Pennsylvania The weekend forecast offers favorable conditions for residents planning fall festivals, outdoor recreation or other activities throughout the Pittsburgh metropolitan area.
Saturday will remain cooler during the early morning hours, but afternoon temperatures should recover into the middle 60s.
Sunday is expected to be slightly warmer, with sunshine and temperatures approaching 67 degrees.
No precipitation is indicated in the supplied five day Pittsburgh forecast.
Late October Outlook Signals Warmer Pattern NOAA's Climate Prediction Center outlook for October 28 through November 3 favors above normal temperatures across much of Pennsylvania, including the Pittsburgh region.
Precipitation probabilities during that period remain closer to normal, according to the extended outlook.
The longer range guidance does not guarantee specific daily temperatures or rainfall amounts.
For now, residents should prepare for chilly nights through Saturday morning, followed by a sunny weekend and somewhat warmer afternoon conditions Sunday.