Say a nasty blizzard hits, and you're on your way from a small shack in the woods to a large city closer to the mountains. As it gets colder and the snow starts to pile up, you could get some sort of a fitting HUD 'indicator' (like ice around the screen, though now I forget which game features that) letting you know that you need to take shelter and let the storm pass, or at least get out of it for a time.
Or how about some nasty thunderstorms? Say there's a 1/25 chance during each storm (per storm) that you could be hit by lightning, and the lightning would reduce your health by 'x' points. If you're low on health, maybe it'd be best to take shelter and rest. I think that weather should play a LITTLE bit larger roll in a game, especially one that relies on travel, particularly long distances, and often on foot.
What do you guys think?
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