Despite the record breaking heat, we had short bursts in the backyard. We couldn't go out for long as it was hot, hot, hot and it isn't safe to do heat for an extended period of time.
I took advantage of the 100+F weather and washed the goldens outside. I was wearing hair (goldens shed) and the old lady can't stand up for a long time and neither can Terra with her hip issues so it was a roll over experience. It's a HUGE job.
I made a joke that washing 1 golden is similar to washing 4 Havanese. That's without drying them and just letting the sun dry them after much brushing and shedding and putting hair in bags.
Aren't you lucky that you chose a Havanese? But the goldens - well they are gentle souls. We just happened to have a 14+ year old lady (a rescue) that probably won't make it to winter and another that has serious hip issues. But still their heart remains. Rather hard to say - it's time with such a heart. <sigh>
Now back to the Havanese... make sure they have plenty of water in this weather. Don't leave them in a car or outside even in the shade. It's just too hot.