We had 20 C outdoors here today : 70 F. Normal high for this period is 15 C: 60 F.
Yes it was hot by our standards.
Honestly I am looking forward to some real fall weather. No snow, but wear a jacket and you're comfortable. Best weather for working outdoors.
As for indoors, the furnace will bring it up to the ideal temp. I turned my furnace breakers off in June and it is still off. But with the sun shining like today, it was over 70 F, frankly a little too warm.