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 12:28 PM. The temperature feels like 64.55 with a humidity level of 97 so dress accordingly. Cloud coverage is 91 percent with visibility at 7.5 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 15 MPH. At the end of the day don’t miss the sunset at 10:40 PM.