Get all of your garden equipment out of the rain. (I found several tools still out inthe elements!)
Store roto tillers and tools in a dry area. Remove all of the dirt so they doesn't rust the tools.
If you have veges in the garden (like tomatoes, squash or pumpkins) you may think of putting plastic or tarp over them to shed the water so they dry out. If it rains too much, the veges will start to rot.