My antenna is in the attic of my flat roof home.
I went up in the attic yesterday afternoon when it was 72°F and sunny outside. I was shocked that the temperature difference --- it was 106°F in that attic, a difference of 34 degrees from the outside temperature ! !
So, I waited until this morning, before 8am, when the outside temp. was 55°F, and I was nicely surprsied to find the temperture in the attic only 60°F, just a 5 degree difference.
The Moral of the Story is, if you need to go into your attic to adjust an antenna (or for any other reason...) the only part of the day when temperature is not oppressive, is the early morning hours.
I just did not realize until yesterday, that the temperature difference in the daytime, on a Spring afternoon, would be 34 degrees !!
Cable Channel Choice is the only choice I want to make !!