Harrisburg, PA – A cold snap across central Pennsylvania could damage sensitive vegetation as the National Weather Service issues a frost advisory in effect from 3 a.m. to 9 a.m. Thursday.
According to the National Weather Service in State College, temperatures will fall into the low to mid-30s overnight, with isolated rural valleys dipping as low as 30 degrees. The advisory impacts Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon, and York counties.
Frost formation during the advisory window could kill or damage sensitive plants left uncovered. Residents with gardens or agricultural interests are urged to take immediate precautions, such as covering plants or moving them indoors.
Though slightly colder temperatures are expected farther north, counties like Huntingdon, Newport, and Selinsgrove are not under the advisory as their growing season doesn’t officially begin until April 21.
This spring frost event contrasts with typical mid-April conditions, reminding growers and gardeners of the lingering risk of cold snaps even after warmer weeks.
Officials recommend monitoring local weather updates and preparing frost protection methods tonight. For more detailed weather information, visit weather.gov/ctp or follow @NWSStateCollege on social media.
