Mesa enjoys a mild climate, with more than 300 days of sunshine every year. If you secure a vacation rental in the summer, note that Mesa temperatures can get really hot, although you’ll often get a desert breeze at night. In spring and autumn, you can enjoy milder sunny days and little chance of rain. The famous Dia de los Muertos Festival takes place in October. In winter, temperatures can drop slightly, but you won’t need to bundle up too much. The days will still be mild and mostly sunny, but the nights can get cooler, so it’s a good idea to pack a warm layer just in case.