If you have a security system installed in your home, ensure that it's working properly—including all alarms, motion detectors, cameras, and other monitoring equipment.
Some DIY home security systems offer optional monitoring. If you usually keep tabs on your system in an app, consider adding 24/7 pro monitoring to your security system for the month in which you'll be traveling.
On top of stepping up security with your alarm system, cancel mail and any regular deliveries. Have a friend or neighbor check on your home while you're away, especially if you'll be gone for a long time. If you live in a snowy climate, make arrangements to have snow cleared while you're away.