Syracuse, New York — A sharp overnight temperature drop will bring frost and a damaging freeze to parts of central New York and northeast Pennsylvania, threatening crops and creating localized travel hazards through the weekend.
Frost is expected to develop first between 2 a.m. and 7 a.m. Saturday in Syracuse, Auburn, Ithaca and Elmira, where temperatures falling into the mid-30s will allow ice crystals to form on exposed plants, especially in valleys and rural areas.
According to the National Weather Service in Binghamton, a stronger freeze will follow between 2 a.m. and 8 a.m. Sunday, when temperatures drop to 29°F to 32°F across Binghamton, Cortland and Oneonta, cold enough to kill sensitive vegetation and damage unprotected outdoor plants.
Cold air settling into low-lying areas such as river valleys near the Susquehanna and Chemung rivers will intensify frost coverage, with rural drainage areas and sheltered backyards seeing the coldest readings.
This is part of a broader system bringing clearing skies and light winds behind departing rain, allowing rapid overnight cooling and widespread frost formation.
Patchy frost may also create slick spots on bridges and untreated roads along I-81 and I-86 during early morning hours, especially in shaded and low-elevation stretches.
Residents should cover or bring in sensitive plants and avoid leaving vegetation exposed overnight.
The most damaging freeze is expected between 2 a.m. and 8 a.m. Sunday, when subfreezing temperatures peak across the region.
