If you planning to travel to Chester County Historical Society, West Chester, Pennsylvania, 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 12:20 PM. The temperature feels like 11.200000000000001 with a humidity level of 55 so dress accordingly. Cloud coverage is 5 percent with visibility at 14.6 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 6 MPH. At the end of the day don’t miss the sunset at 9:41 PM.