Manchester, NH – As Thanksgiving approaches, New Hampshire may face a sharp drop in temperatures that could raise the risk of frostbite and hypothermia, according to newly updated projections from the National Oceanic and Atmospheric Administration (NOAA). The Nov. 19 climate outlook highlights a significant pattern shift beginning November 25 that will drive colder-than-normal air into the Northeast through at least early December.
According to NOAA, the developing pattern is influenced by the current La Niña cycle, the Madden–Julian Oscillation, and the potential for a rare November sudden stratospheric warming event. Together, these factors may push unusually cold air into the North-Central and Eastern U.S., with New Hampshire positioned firmly within the below-normal temperature zone.
With millions traveling for Thanksgiving and more residents spending time outdoors for parades, tree lightings, and early shopping, state health officials warn that frostbite and hypothermia can set in faster than many people realize.
Common frostbite signs include:
• Numbness or loss of feeling
• Tingling or prickling sensations
• Cold, hard, or waxy-looking skin
• Skin color changes (red, white, blue, gray, purple)
• Blisters after rewarming
Ten key signs of hypothermia:
Shivering, slurred speech, slow or shallow breathing, weak pulse, severe fatigue, confusion, memory loss, drowsiness, stumbling, and—at its worst—loss of consciousness. Infants may show bright red, cold skin and unusually low energy.
NOAA urges the public to dress in warm layers, cover exposed skin, and limit time outdoors during the coldest periods. Anyone showing frostbite or hypothermia symptoms should seek immediate medical care and warm the affected areas with warm—not hot—water or gentle body heat.





