Does weather play a big part when you’re coming up with ideas for settings?
Weather might not matter very much at all if the entire story takes place in someone’s bedroom or in Walmart or underground somewhere. On the other hand, weather could become a major factor in the setting: it can create or cause tension and suspense and it might even serve as a character of sorts, whether that character is the antagonist or the protagonist. Weather can reflect the character’s mood and create a certain atmosphere for the story.
When I write, I don’t think of weather when I’m planning the story or writing the first draft. I have never based a story’s premise on a weather situation, although plenty of people have and have done it well. I tend to think of weather as an afterthought, and I’d like to move away from that as I become a (hopefully) better writer.
If you want to throw in an element of suspense or an element of conflict, mess with the weather in your story. After all, you are playing God…