The best month to buy a riding mower is April or August. Shoppers are most likely to find the model they want in spring, at the start of the mowing season. The prices won’t be the lowest, but availability is at the highest. Look for good sales during the summer, especially around Labor Day. At that point, many home goods stores are looking to clear floor space for fall/winter products. Options will be somewhat limited, but you can still find the make and model you’re looking for or something comparable. The cheapest of the cheap riding lawn mowers can be found in the fall, but who knows what stores will have left. And most stores don’t even sell riding mowers in the winter. While it’s not an exact science, stick to the months that begin with the letter A when shopping for a riding mower.