Due to its sheer size and range of landscapes, regional climates across the US vary dramatically from season to season.
Southern California generally enjoys a pleasant year-round climate — mild in winter and hot in summer, making it a great place to visit in any season. Northern California, around San Francisco, is cooler and can be prone to sea mists along the fog belt.
Hawaii enjoys a tropical climate that's warm and inviting year-round.
The South and Southwest experience hot, humid summers but mild winters and great conditions for outdoor activities in the spring. Hurricanes can affect the Gulf and east coasts most commonly from August to October, while tornadoes can be a common phenomenon in southern and central states in the summer months.
Temperatures in the Rocky Mountains change with altitude, but summers here are generally warm and pleasant, while winters often see heavy snow making travel planning tricky and unpredictable.
Month-by-month guide for traveling in the US
Visiting the US in January - March
Winter is a good time to visit the southern half of the country — including the South, California and the Southwest, with pleasant temperatures and often sunny days. It's also a better-value and less-busy time to visit. The nights can be cold, particularly in the deserts, but temperatures are ideal during the day for outdoor activities such as hiking and sailing.
Events & Festivals
- Mardi Gras, New Orleans' biggest festival, culminates on the day before Ash Wednesday, with the largest and liveliest parades and street parties in the preceding few days.
- Saint Patrick's Day (March 17): The Saint Patrick's Day parade is a celebration of all things Irish. Join the party as the city and the river turns green and pints of Guinness can be enjoyed in every bar in Chicago.
US Climate Guide
| Destination | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boston | ☀36°F🌧4" | ☀37°F🌧4" | ☀46°F🌧4" | ☀57°F🌧4" | ☀68°F🌧4" | ☀77°F🌧3" | ☀82°F🌧3" | ☀81°F🌧4" | ☀73°F🌧3" | ☀63°F🌧4" | ☀52°F🌧4" | ☀39°F🌧4" |
| Chicago | ☀30°F🌧2" | ☀34°F🌧1" | ☀45°F🌧3" | ☀57°F🌧4" | ☀70°F🌧3" | ☀81°F🌧4" | ☀84°F🌧4" | ☀82°F🌧4" | ☀75°F🌧4" | ☀64°F🌧3" | ☀48°F🌧3" | ☀36°F🌧2" |
| Dallas | ☀55°F🌧2" | ☀59°F🌧3" | ☀68°F🌧3" | ☀77°F🌧4" | ☀82°F🌧5" | ☀91°F🌧3" | ☀95°F🌧2" | ☀95°F🌧2" | ☀88°F🌧4" | ☀79°F🌧4" | ☀66°F🌧3" | ☀57°F🌧2" |
| Denver | ☀43°F🌧0" | ☀46°F🌧1" | ☀52°F🌧1" | ☀61°F🌧2" | ☀72°F🌧3" | ☀81°F🌧2" | ☀88°F🌧2" | ☀86°F🌧2" | ☀77°F🌧1" | ☀66°F🌧1" | ☀54°F🌧1" | ☀46°F🌧1" |
| Las Vegas | ☀57°F🌧0" | ☀63°F🌧0" | ☀68°F🌧0" | ☀77°F🌧0" | ☀88°F🌧0" | ☀99°F🌧0" | ☀104°F🌧0" | ☀100°F🌧1" | ☀93°F🌧0" | ☀81°F🌧0" | ☀66°F🌧0" | ☀57°F🌧0" |
| Portland | ☀46°F🌧6" | ☀52°F🌧4" | ☀55°F🌧4" | ☀61°F🌧3" | ☀68°F🌧2" | ☀73°F🌧2" | ☀81°F🌧1" | ☀81°F🌧1" | ☀75°F🌧2" | ☀64°F🌧3" | ☀54°F🌧6" | ☀46°F🌧7" |
| Seattle | ☀45°F🌧6" | ☀50°F🌧4" | ☀52°F🌧4" | ☀59°F🌧2" | ☀64°F🌧2" | ☀70°F🌧1" | ☀75°F🌧1" | ☀75°F🌧1" | ☀70°F🌧2" | ☀61°F🌧3" | ☀50°F🌧6" | ☀46°F🌧6" |
| Washington D.C. | ☀43°F🌧3" | ☀45°F🌧3" | ☀55°F🌧3" | ☀66°F🌧3" | ☀75°F🌧4" | ☀84°F🌧4" | ☀88°F🌧4" | ☀86°F🌧4" | ☀79°F🌧4" | ☀68°F🌧3" | ☀57°F🌧3" | ☀46°F🌧3" |
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✈Practical tips for traveling to the US, from social protocols to guidance on money matters, with a link to the latest US State Department travel advice.
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