As Pittsburgh braces for another chilly day, residents north of I-80 will need to keep their umbrellas handy. According to the National Weather Service (NWS) Pittsburgh PA, "Rain showers north of I-80 for much of the period" are expected, with peak showers occurring in the afternoon elsewhere. The showers come from lake-effect rain, a familiar nuisance for locals, as northwest flows continue over the warmer waters of Lake Erie. The NWS update went on to specify that shower chances peak in the afternoon elsewhere, apart from the north
In the meantime, frost and freeze advisories remain in effect. Those living south of I-70 should particularly prepare to rapidly drop temperatures tonight, as advised by NWS, with a 50% to 70% chance of freeze expected. And while it might not be time to fully stow away the winter bedding, there is a silver lining coming Saturday – "seasonable" temperatures are projected to return, even if they hang slightly below normal.
Looking ahead, the NWS advises mainly dry through early next week," with a complex forecast developing for mid-to-late next week. As a high-pressure system dominates, bringing subsidence, residents can breathe a slight sigh of relief from the incessant showers. However, all eyes are on a potential system off the New England coast that could, depending on its development, lead to more showers influenced by northerly flow under lake influence.
This weekend, while frost/freeze chances linger in the early Saturday hours, clearer skies will allow for highs close to seasonal normals, indicating that despite the frosty kick-off, temperatures could fall into a more familiar autumn rhythm. Pittsburghers can take solace in this return to normalcy, even if their gardens might have to bear yet another potential freeze come Saturday night.
Aviators too need to stay informed, as the NWS forecasts stratocu limitations to visibility, though the bulk of shower activity will remain limited to areas along and north of I-80. While the showers could extend farther south, affecting terminals like PIT/AGC/LBE, most terminals are currently sitting at VFR and should maintain those conditions through the weekend. As always, pilots are encouraged to check for updates before departure.
Travelers should heed advisories, as the NWS maintains a Frost Advisory for parts of Pennsylvania, Ohio, and West Virginia, lasting until the morning hours. While October's grip remains frosty, Pittsburghers look forward to a semblance of relief, as temperatures are forecast to inch towards seasonal averages.
