A tighter supply figure generally means less competing inventory for a buyer to choose from, which tends to favour a faster sale for a home priced against real comparables. A looser figure means more competition, and an overpriced home in that environment sits regardless of the citywide trend.
The variables that move an individual sale are price relative to the current benchmark of $444,700, condition, and how the home is marketed, not the calendar month. Two homes in the same neighbourhood can sell at very different speeds depending on those factors alone.
Your home's specific speed depends on getting those factors right, not on a citywide average. Get your hand-reviewed valuation from Joel Dyck.