If you planning to travel to United States Naval Observatory, Washington, District of Columbia, 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 9:45 AM. The temperature feels like 67.65 with a humidity level of 68 so dress accordingly. Cloud coverage is 28 percent with visibility at 12 percent. Today’s UV index is 11, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 5 MPH. At the end of the day don’t miss the sunset at 12:26 AM.