US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country.

Displays current conditions for all major cities on one page, with five-day forecast and more detailed information for each available.

Forecasts, observations, satellite imagery, and climate data.

Five day forecasts for a wide variety of cities, as well as national satellite and forecast maps.

Detailed condition reports from a ski areas throughout the country.

Provides climate and weather information, facts and statistics about the country, along with five-day forecasts for major cities.

City-by-city weather reports and forecasts.