If you planning to travel to Hopkins Observatory, Williamstown, 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 12:19 PM. The temperature feels like 21.200000000000003 with a humidity level of 75 so dress accordingly. Cloud coverage is 77 percent with visibility at 9 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 4 MPH. At the end of the day don’t miss the sunset at 9:24 PM.