It's time for a road trip! From Washington, D.C., to San Francisco, you can visit all the best national parks in the U.S.

Night - Cloudy. Winds NW at 7 mph (11.3 kph). The overnight low will be 35 °F (1.7 °C). Cloudy with a high of 44 °F (6.7 °C). Winds from NW to NNW at 7 to 10 mph (11.3 to 16.1 kph). Cloudy ...