Hundreds or thousands of years ago our ancestors would've have exactly one dry place to be & you could get sick, maybe die if you got too chilled. Seems like a good reason for a biological drive to be restful on rainy days. It's this modern world of Busy that makes it weird.

Have you tried cbd for sleep? It can help calm our nervous system. If you live where marijuana is legal I suggest trying a gummy that is 20cbd ; 1thc. For me I've found the tiny bit of thc helps connect the cbd better. Also, I only take a silver. I'm sure the right dose is different for everyone.