If you planning to travel to National Museum of American History, Washington, District of Columbia, United States, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 11:36 AM. The temperature feels like 55.55 with a humidity level of 57 so dress accordingly. Cloud coverage is 21 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 6 MPH. At the end of the day don’t miss the sunset at 9:04 PM.