You've probably heard people talk about “winter” or “snow” tires. For many of us that travel on major roads and don't live in a place that has harsh winters, the “all season” tires will be just fine.
“Winter” or “snow” tires come are made with a different kind of tread. They have these special raised areas on the tires that will do a better job of digging into the snow or ice, and are particularly useful if you find yourself on back roads that are not plowed, or substantial inclines. More often than not, winter tires and chains are recommended in places like Colorado or areas with mountainous terrain. If you live someplace with a relatively mild winter mild winter, snow tires might be overkill.
That being said, now would be a good time to make sure that the tires you do have are ready for the upcoming change in weather. Long hot summers can be taxing on tires. The heat starts to break down the rubber, and if you parked in direct sunlight, don't be surprised if your tires are showing some cracks.
The change in temperature will also cause your tires to expand and contract. This kind of thing will actually change the air pressure in your tires, and cause stresses on them, too. Don't be surprised if you get up in the morning and your tires have a little less air than they did when you went to sleep.
With all the advances made in engines and internal technology, everything still comes back to those round rubber things. They are the thing that keeps you safely on the road, and makes sure you stop in plenty of time. Check them now, before the winter weather starts to fly.