A single month, especially a spring one, is a weak basis for a decision anyway. April sits at the start of the Saskatoon listing season, when new supply arrives before the buyers who will absorb it, so month over month comparisons around it move for seasonal reasons rather than because values changed. Year over year is the comparison worth making.
The benchmark also behaves differently from a median. It tracks a home of consistent characteristics through time, so it is not thrown off by a month in which several expensive properties happened to sell. A median simply reports the middle of whatever transacted, which is why a quiet month in one price band can move it without any home changing in value.
If you need April specifically, the association publishes its monthly Saskatoon statistics package and the archived releases are the place to take it from, with the month and property type named. For your own house, the current picture matters more than any historical month, and Joel Dyck's hand-reviewed valuation prices it against sales that closed recently.