The average speed at a school with a good program is about 65-70 MPH.
75-80 mph
A baseball pros fastball is on average 92 mph
55-65
If the softball was measured in time then check you stop watch. The ball speed at a softball pitching distance would be traveling several hundred miles per hour at time stated. A very fast softball pitcher will have a release to catcher time around .5 seconds.
43
The average fastball speed is 92 miles per hour. In 2003, Billy Wagner threw 25 pitches that were 100 miles per hour or faster.
In travel team tournament play, about 55 miles per hour.
About 45 mph
The average speed of a curveball in baseball is typically around 75-85 miles per hour, but it can vary depending on the pitcher and level of play. The speed of a curveball is slower than a fast ball but the movement of the pitch can make it harder for batters to hit.
Throw it harder
If you've had your mechanics checked and is consistent with your pitches conditioning is next for you. Having a conditioning program will surely increase your speed. A program focusing on core, leg strength will help.
Bob Gibson has the 7th fastest fastball in major league baseball history. His fastest fastball was clocked at 96 miles per hour.