Yes, it’s perfectly ok to cut grass in October. In fact, experts suggest giving your lawn one last mow in October to prepare it for winter.
Always keep your lawnmower on the highest blade setting when you do this, though. While you need to cut your grass for winter, you don’t want to cut the grass too short as this could cause unnecessary stress on the grass.
Instead, opt for a length of around 2-3 inches in height. This will keep it looking neat and tidy over the winter while also keeping the ground safe from the harsh winter weather.