Riliegh App, a city of Olean employee, works on replacing older "Welcome to Olean"  banners at the intersection of North Union St. and Route 16 during the sunny and warmer weather on Thursday. Some rain moved through the area on Friday — even a severe thunderstorm warning for Cattaraugus County was put out in the afternoon — with a high of 51 in Olean. The weekend was expected to be colder with a high of 39 Saturday and rain possible, while Sunday will be colder still with a high of 26 and a chance of snow.