Weather & Environment

Frost Advisory Issued for Eastern Pennsylvania, Southern New Jersey

Overnight temperatures dropped to 35 degrees across eastern Pennsylvania and New Jersey, prompting weather officials to warn of potential frost damage to sensitive plants.

Michael Reeves
Michael ReevesStaff Reporter
Published April 27, 2026, 7:41 AM GMT+2
Frost Advisory Issued for Eastern Pennsylvania, Southern New Jersey
Frost Advisory Issued for Eastern Pennsylvania, Southern New Jersey

PHILADELPHIA, PENNSYLVANIA β€” The National Weather Service issued a frost advisory for parts of eastern Pennsylvania and New Jersey early Sunday morning. Residents were warned that temperatures dropping to 35 degrees could result in frost that may damage sensitive outdoor vegetation.

The advisory, issued at 3:12 AM EDT by the National Weather Service Mount Holly office, was in effect until 8:00 AM EDT Sunday morning. Frost formation was expected to be likely in sheltered valleys throughout the region.

Impact on Local Vegetation

Weather officials noted that overnight frost conditions could harm sensitive outdoor plants. The advisory warned that “sensitive outdoor plants may be killed if left uncovered,” prompting gardeners and landscapers to take protective measures.

The frost advisory comes as the region experiences unusually cool temperatures for late April, with overnight lows dipping below normal seasonal averages. Areas in sheltered valleys and low-lying regions face the highest risk for frost development due to cold air settling patterns.

Regional Coverage

The frost advisory covered multiple counties across eastern Pennsylvania, including the greater Philadelphia metropolitan area, as well as portions of southern New Jersey. The National Weather Service Mount Holly office, which serves southeastern Pennsylvania and southern New Jersey, issued the warning to help residents prepare for the temperature drop.

Residents were advised to cover sensitive plants, bring potted vegetation indoors, or take other protective measures to prevent frost damage during the overnight hours. The advisory expired at 8:00 AM EDT as morning temperatures began rising with sunrise.

Local gardening centers and nurseries likely experienced increased activity Saturday evening as residents sought materials to protect newly planted flowers, vegetables, and other cold-sensitive plants from the unexpected late-season frost threat.

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