Trim bushes and trees that are touching your house. This provides a pathway into your home for insects, critters, and moisture. Trim ‘em back a foot or so.

Clean out downspouts, and replace any that are damaged. The downspouts near sidewalks and driveways can get crushed by snow, people, pets, and cars. If you can open them up so that water flows freely, great, if not, replace them. If the water can't get out of the downspout as quickly as it got in, it will back up and find someplace else to go. Probably someplace you don't want it. It winter it will be an icicle or ice dam. While you are at it, think about what you can do to prevent this from happening again.

Check your basement windows and siding. Pull away the dirt, leaves, mulch, etc. Remove anything that gets wet and stays wet. It will hold moisture against the wooden frame, sill, and brickmold and lead to rot and paint failure, possibly even critters or water leaks. If the grade of the yard around your house has crept up over the decades, you can put in a window well, either a manufactured one from the hardware store, or you can build one up out of bricks, landscape pavers or timbers, or pressure treated lumber. It doesn't have to be complicated or fancy, just keep the dirt, and the moisture it carries, away from the non-masonry parts of your home.

Check the caulking on your house. There is typically caulk in any joint between dissimilar materials. Wood siding and masonry foundation, wood casing or brickmold and brick or stone, aluminum flashing and wood or masonry. All these joints are caulked because dissimilar materials expand and contract at different rates, and sometimes these joints are tight, and sometimes they are wide open. Caulk is designed to expand and contract to keep these joints sealed year around, but caulk isn't immortal. It will give out eventually, and start to let moisture in. So check these joints, and if you see gaps, scrape and brush away the loose stuff and hit them with a modicum of new caulk. A good caulk intended for the materials you are trying to seal.