Lawn mowers regularly go on sale at two points in the year:
Spring: Many stores put their lawn mowers on sale in the lead-up to mowing season. These sales usually end in mid-May, but holiday weekends around Memorial Day or Father’s Day aren’t a bad time to buy if you missed the early sales.
Early fall: The best lawn mower sales of the year are in September, when retail stores need to clear space and mowers are no longer in demand.