If you planning to travel to Clara Barton National Historic Site, Bethesda, Maryland, 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 11:43 AM. The temperature feels like 61.7 with a humidity level of 43 so dress accordingly. Cloud coverage is 3 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 11 MPH. At the end of the day don’t miss the sunset at 9:58 PM.