Pittsburgh starts Friday under clear skies, with morning temperatures in the 40s before sunshine lifts the high to near 64 degrees, according to the National Weather Service. The forecast calls for a dry day, followed by cooler air after sunset.
Friday night is forecast to stay clear, with a low around 37 degrees. Northeast winds should remain light, at roughly 1 to 5 mph.
Sunny Weekend, Cold Nights
Saturday is forecast to be sunny, with a high near 66 degrees. Lows over the next few days are expected to range from the upper 30s to low 40s. Sunday should bring sunshine and light winds, with a high near 67 before temperatures fall to around 38 overnight, according to the National Weather Service.
Morning river-valley fog could pop up in spots, particularly where the air settles near waterways, but widespread fog is not expected. Drivers may still encounter a brief patch of reduced visibility early in the day before the sun takes over.
What Upper-30s Lows Mean for Freeze Risk
Forecast lows in the upper 30s do not by themselves indicate a freeze. NOAA’s National Centers for Environmental Information defines a first freeze as surface air temperatures of 32°F or below over a widespread area for a climatologically significant period. That definition does not establish how typical upper-30s temperatures are for Pittsburgh at this point in fall or when the city usually gets its first freeze.
Warm-Up Arrives Monday
Monday is shaping up to be the warmest day in the near-term forecast, with mostly sunny skies and a high around 70 degrees. Tuesday through Thursday should remain mostly sunny to partly sunny, with highs in the mid-to-upper 60s and near 70 by Thursday.
Rain is unlikely through the middle of next week, with precipitation chances below 10 percent. The dry stretch favors fall walks, outdoor errands and weekend plans, though a jacket may be useful after sunset.
