: Winter in the United States usually starts in December and ends in February. The season is characterized by cold temperatures, with average lows often dropping below freezing. Winter is a great time for indoor activities like skiing, ice skating, and cozying up with hot chocolate. The season can also bring snow and ice, with some regions experiencing more extreme weather conditions than others.

Seasonal transitions are defined in two ways: (based on the annual temperature cycle) and Astronomical (based on Earth's position relative to the sun). Meteorological Timing Astronomical Timing (2026) Key Characteristics Spring March 1 – May 31 March 20 – June 21 Thawing, blooming plants, and variable rain. Summer June 1 – August 31 June 21 – Sept 22 Hottest months; peak for outdoor activities and travel. Fall Sept 1 – Nov 30 Sept 22 – Dec 21 Cooling temperatures, vibrant foliage, and harvest. Winter Dec 1 – Feb 28/29 Dec 21 – March 20 Coldest months; snow common in North/mountain regions. Regional Weather Variations

: Experience four sharp seasons . Winters can be severe with heavy snowfall (e.g., Chicago and Minneapolis), while summers are often hot and humid.

: Typical highs reach 93°F (34°C) in Houston, TX, and can soar to 107°F (42°C) in Yuma, AZ. United States - Climate, Regions, Seasons | Britannica

Summer is the primary travel season in the U.S., marked by long days and outdoor festivities. Best time to visit the USA | Travel Talk Tours

: Averages range from a frigid 3°F (-16°C) in International Falls, MN, to a mild 55°F (13°C) in New Orleans, LA.

It's worth noting that the United States is a large and geographically diverse country, and the seasons can vary significantly depending on the region. For example:

This is the ideal window for desert exploration in states like Arizona and New Mexico, where temperatures are pleasant for hiking before the searing summer heat arrives. Summer (June – August): Peak Heat and Adventure

: Southern Florida and Hawaii have tropical climates where "seasons" are often defined as wet (May–October) and dry (November–April) rather than hot and cold. Average Temperature Examples

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The United States is a land of massive geographic and climatic diversity, where the experience of the seasons depends entirely on where you stand. While the country generally follows the standard four-season cycle, the intensity and duration of spring, summer, autumn, and winter vary significantly from the frigid peaks of the Rockies to the humid bayous of the South.