The Iowa girls high school softball season begins with first practices on May 7 and first competitions on May 21. Iowa has five classes of softball with the largest 40 schools competing in class 5A, the next 48 schools competing in class 4A, the next 64 playing class 3A, the next 80 playing in class 2A and the remaining school competing in class 1A. The regional tournament dates are as follows:
- Class 1A and 2A: July 2, 3, 6, 9
- Class 3A: July 3, 6, 9
- Class 4A and 5A: July 5, 7, 10
The Iowa Girls High School Softball State Tournament will be held July 16–20, 2018, at Rogers Sports Complex in Fort Dodge. The official tournament ball is the Dudley SB 12L RF FP — Red Stitch (.47 COR).