Interstate 66, U.S. Route 50 and 29 provide access from the West. There are several Metro train routes from the suburban areas surrounding the city. The Smithsonian Metro stop comes out on the National Mall. The climate in Washington D.C. is seasonal. Summers can be very hot and humid with an average temperature of 82.
Winters are variable and can be very mild to very cold.
The average winter temperature is 35. Clothing should be in accordance with the season. All areas of the National Mall are wheelchair accessible. Each site on the Mall has one wheelchair that can be used by visitors. Tourmobile Sightseeing offers narrated shuttle tours daily to 18 major sites on the National Mall and in Arlington National Cemetery.