Rain is the time to be indoors by the fire sipping spiced cider.
When I was a lot younger and living in western Oregon, I’d hike in rain or snow because it was either that or stay indoors all winter. Once I climbed Mt. Hood in January.
Now I’m in southern Arizona where the summer sun is the enemy, and I get out a lot more in the winter, generally carrying a shotgun since quail season runs during those months. But I’ll stay home when it’s raining.