Clean and lubricate hinges, locks, and moving parts in window and door hardware once a year to maintain ease of use. In Colorado sometimes these get stuck if doors and windows aren't open much in the winter. This is a safety issue as well as a convenience issue - you want to be able to get out of the house in an emergency.
Test the auto-reverse function on your garage door, as well as the balance. Familiarize yourself with the door's release mechanism in case of emergency or power failure. Kids will be playing outside more now that the weather is better so keep them safe in and around your garage.
Cut grass no shorter than 3 inches, and never more than 1/3 of the blade. Mow in the morning or evening. Deep watering, in the morning, is better for your grass than frequent, shallow watering. In our hot Colorado summers watering in the morning will save water too as it won't evaporate as much as it will if you water during peak sun hours.