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Cool, Dry Weekend Brings Frost Alerts Across Parts of Pennsylvania

Frost threatens sensitive plants in wind-sheltered valleys.

Overview

  • Showers that lingered Friday night tapered by early Saturday as skies cleared from west to east, with National Weather Service frost or freeze alerts posted for counties including Franklin, Perry, Juniata, Mifflin and several in western Pennsylvania.
  • The weekend stays mainly dry yet unseasonably cool, with daytime highs in the 50s to near 60 and early lows dipping into the 30s and 40s in colder pockets.
  • Patchy frost is most likely in wind-sheltered mountain valleys and in areas west and northwest of I-81 where colder air can settle near the ground.
  • Pittsburgh Marathon events look dry but chilly, with race starts in the 30s and daytime readings holding in the 50s under more Sunday sun.
  • Temperatures rebound early next week into the upper 60s and 70s, with rain chances increasing late Tuesday into Wednesday and returning again later in the week.