Dixon summers are the main reason owners ask about cooling, so the numbers come first and then the setup.
How hot it gets
NOAA's 1991 to 2020 climate normals for Vacaville list an average July high of 97.3 F, with about 27 days a month at 90 F or above in July and about 10 days at 100 F or above. August is close behind at 96.5 F. Those are 30-year averages, not forecasts, and the kennel's own spot will differ a little, because the weather station is about eight miles away.
What the building does
The indoor and outdoor runs are heated in winter and air-conditioned in summer. The 2022 kennel building has an HVAC system and 25 doggie doors along each side, so a dog can walk from the outdoor run into a cooled indoor space whenever it likes. Kuranda raised beds keep dogs off the floor, and blankets are provided. Walks are included in the nightly rate.
At drop-off and pick-up
Keep the car's air conditioning running while you wait to check in, and leave your dog in the vehicle until staff come out. Staff carry belongings and walk your dog in, and on hot pavement they may scoop up a small dog and hurry. Pavement can be much hotter than the air, so the hot pavement guide is worth a read.
What owners can do
Tell the staff about thick double coats, short-nosed breeds or older dogs when you book, because those dogs feel heat sooner. Your dog's records must be current for the whole stay. The heat guide and heat stroke guide explain the signs to watch for at home.