The streak of damp weather in Pittsburgh is set to clear, giving way to a stretch of dry and cool conditions throughout the week, with a warming trend in sight by the weekend. This break in precipitation comes as scattered drizzles taper off and clouds hang overhead into Tuesday, keeping temperatures below the seasonal average, according to the National Weather Service Pittsburgh PA.
Tuesday's weather is influenced by the northwest flow and cold air advection ushering in cloud cover until dawn that dropped the temperature forecasts slightly for the lows, meanwhile, ensemble 850 mb temperatures around 5-6C are expected to hold highs in the 60s north of Pittsburgh, and near 70 in more urban areas, scattered drizzle will diminish this evening indicating a shift toward seasonably cool weather. As the week progresses, the dry spell is anticipated to persist, with residents outside of urban areas likely to experience lows below 50F Tuesday night at an 80-90+% probability and a brisk start to Wednesday morning.
For aviators, the NWS indicates residual cool advection within NW flow will foster areas of bkn/ovc MVFR/VFR cigs through the early afternoon, although improving conditions are projected post-18z with VFR probabilities increasing to 70% or greater at terminals and skies clearing into the night, especially after 00z where uncertainty lingers near FKL/DUJ due to possible lake influence that may maintain broken VFR stratus clouds.
Looking further ahead into the week, ensemble clusters demonstrate variance mainly in the timing of the upper low's departure by week's end high pressure is set to remain the dominant factor into next weekend, paving the way for clear skies and light winds the disagreement on timing may impact temperatures depending how quickly heights rise but either way budding warmth is on the horizon with seasonal norms expected by the weekend and an early week tease of above-average values moving in next week, the NWS forecast conveys. Pittsburgh area faces none regarding watches, warnings, or advisories currently in place.
