The widespread cold snap will affect millions across the Eastern U.S., with frost and freezing conditions likely in over 30 states. Sub-freezing temperatures in the Central Plains and Great Lakes regions could lead to hard freezes, impacting agriculture and outdoor activities. Northern Florida may experience patchy frost, which could affect sensitive vegetation. While the cold air is not expected to break records, it will bring a stark departure from average temperatures, with some areas seeing drops of 10–15°F (5–8°C) below normal. Residents should prepare for colder mornings and potential frost-related impacts.