Because of the immense extent of the country the climate of the United States of America is very diverse, ranging from the tropical climate of Florida and the Hawaiian Islands, up to the polar climate of part of Alaska.
Between these climate extremes are other types of very different climates: the coast overlooking the Pacific Ocean has an oceanic climate, with little difference in seasonal temperatures and winter rains. Proceeding to the south along the Pacific coast, the climate is milder and increasingly resembling the Mediterranean climate, this is along the coast of California south of San Francisco and up to the border with Mexico.
The areas of the Sierra Nevada and the Rocky Mountains, at heights above 2,000/2,500 meters, has an Alpine climate. While at lower altitudes – below 2,000 meters – the climate is semi-desert with low rainfall and large variations in temperature between day and night and between seasons.
Even areas of the Great Plains to the east of the Rocky Mountains have a semi-desert climate with dry and cold winters and hot summers. The areas to the south along the Gulf of Mexico have a humid subtropical climate, with abundant rainfall and limited seasonal variations in temperature.
While the regions to the north towards the Great Lakes have a humid continental climate with strong seasonal temperature variations, rainfall well distributed throughout the year – but more pronounced in summer – and heavy snowfall in winter. The coastal areas along the Atlantic Ocean have oceanic climate, generally with hot summers and cold winters. Rainfall is well distributed throughout the year.
WHEN TO GO TO THE UNITED STATES
For general guidelines the best times to visit the United States are the spring / summer between May and September, but for example in Florida and in the states along the Gulf of Mexico, the summer months are the wettest months and those where are possible hurricanes.
Climate of Alaska.
Climate of Florida.