Comment by macshome

This also reminds me of the situation with my TV antenna. I made an antenna years ago and put it in my attic. Using the old antennaweb service I aligned it with the stations we cared about and then never touched it again.

I installed the antenna in the winter. Everything worked great. In the summer, we lost a few channels. Rain in the summer and hardly anything would come in. The answer I realized, like in the article, is trees. Leaves are already full of water so they are good at attenuating signals. Leaves that are also soaked in rain doubly so.