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 11:38 AM. The temperature feels like 51 with a humidity level of 78 so dress accordingly. Cloud coverage is 54 percent with visibility at 12.7 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 5 MPH. At the end of the day don’t miss the sunset at 10:02 PM.