If you planning to travel to National Heritage Museum, Lexington, Massachusetts, 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 10:47 AM. The temperature feels like 34 with a humidity level of 23 so dress accordingly. Cloud coverage is 0 percent with visibility at 0.5 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 11 MPH. At the end of the day don’t miss the sunset at 10:57 PM.