USA Weather This Week: Major Temperature Shift After Arctic Freeze
USA Weekly Weather Report Dec 15–21: Cold Retreats, Thaw Takes Over
USA Weather Forecast This Week December 2025 – The week of December 15-21, 2025, starts with a brutal Arctic cold snap gripping much of the eastern and central United States, following recent weekend snowstorms. Bitterly low temperatures and lingering snow impacts dominate early in the week, but a dramatic pattern shift brings milder air by midweek, leading to a widespread “December thaw” with above-average warmth across most regions.
Early Week: Extreme Cold and Snow Lingering
Monday and Tuesday (December 15-16) feature dangerously cold conditions in the Midwest, Northeast, Mid-Atlantic, and parts of the South, with temperatures 15-30 degrees below normal. Lake-effect snow continues near the Great Lakes, adding to recent accumulations from weekend storms.
Mid-to-Late Week: Dramatic Warmup
From Wednesday onward (December 17-21), a strong system pushes mild Pacific air eastward, causing temperatures to soar 15-25 degrees above normal nationwide. This thaw could melt snow rapidly and bring spring-like conditions to many areas, while the Pacific Northwest deals with wet weather.
City-Wise Weather Forecast This Week (December 15-21, 2025)
- New York City: Early week highs in the low 20s°F with wind chills below zero; possible lingering snow. Warming to 50s°F by midweek, near 60°F possible late week.
- Chicago: Bitter start with highs around 10°F Monday, subzero lows possible. Rapid thaw to 40s-50s°F mid-to-late week.
- Boston: Highs low 20s°F early, feeling like single digits. Warming sharply to upper 40s-50s°F by Thursday.
- Washington D.C.: Low 20s°F Monday-Tuesday; thaw brings highs in the 50s-60s°F later in the week.
- Atlanta: Unusual cold early with highs in the 30s°F; rebounding to 60s-70s°F by weekend.
- Houston: Highs around 40°F early week (well below normal); warming to 70s-80s°F mid-to-late week.
- Dallas: Low 40s°F start; climbing to 70s°F with mild conditions dominating.
- Los Angeles: Mild throughout, highs 65-75°F; some clouds but dry.
- Phoenix: Warm and sunny, highs 70-80°F all week.
- Seattle: Wet with rain from atmospheric rivers; highs 45-55°F, potential heavy precipitation midweek.
- Denver: Cold early (20s°F highs); moderating to 50s°F later.
- Miami: Cooler start in the 60s°F; returning to 80s°F with the thaw.
Safety Tips for This Week’s Rollercoaster Weather
- Early week: Bundle up against frostbite risk, protect pipes from freezing, and watch for icy roads in snow-affected areas.
- During thaw: Beware of rapid snowmelt causing minor flooding; stay alert for fog in warming areas.
This week’s extreme swing from Arctic chill to mild thaw underscores winter’s volatility – stay prepared for changing conditions!
Posted on December 15, 2025 | ClickUSAnews.com
