If you planning to travel to Arboretum of South Barrington, Barrington, Illinois, 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 50.1 with a humidity level of 97 so dress accordingly. Cloud coverage is 100 percent with visibility at 12.4 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 10 MPH. At the end of the day don’t miss the sunset at 10:49 PM.