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NWS Issues Overnight Frost Advisories Across Upper Midwest and Eastern U.S.

Clear skies with light winds will drop readings into the low to mid-30s, posing a risk to tender plants.

Overview

  • Advisories take effect overnight into early Tuesday, with most valid between 2 a.m. and 8 a.m. local time.
  • Forecast lows in the low to mid-30s, near 33–35°F, are expected to produce frost in cold-prone spots.
  • The NWS urges gardeners to cover or move sensitive vegetation, noting valleys and sheltered areas face the greatest risk.
  • Specific Pennsylvania advisories include Northern and Southern Clinton and Centre, plus Cambria, Tioga and Sullivan counties.
  • Additional alerts extend to northeastern Minnesota and northwestern Wisconsin, northern Lower Michigan, Adirondack areas of New York and Essex County, Vermont, and to Coos County, New Hampshire, parts of northern Maine, and high terrain in Maryland, Virginia and West Virginia.