After what has been a twelve day stretch of 90 degree heat, fall temperatures are a big part of this week's forecast. In fact, most of the high temperatures in the seven day are in the 70s. The secondary headline is decent rain chances. Today the best rain chances will be to the west of Wichita Falls. Tuesday and Wednesday brings the best chance of widespread heavy rain throughout Texoma. Rain chances fall to the slight side Thursday and Friday but cloud cover and cooler temperatures remain.