In stories about legends, the weather was typically nothing more than foreshadowing for the upcoming events.
A sunny day would symbolize a hero's journey about to start. An ancient castle surrounded by dark clouds was the very symbol of an evil scheme. The climax would usually have some thunderclaps even if there were zero clouds in the sky.
Reality wasn't anywhere near so dramatic. Major slaughters usually occurred in bright daylight because vision would be the best. True schemers typically lived in beautiful gardens. Not much usually went on when the weather was foul, as everyone would be holed up in their warm homes.
However, sometimes mortals wouldn't have any choice in the matter. We met with the worst luck despite setting out highly motivated.
