Yeah, for once a translator's note was needed. Dude was watching daybreak outdoors, came in, and wondered if it's going to snow. Okay, makes sense, it must have felt like a really cold morning. The witch tells him not to be an idiot. Hmm... Maybe the season is wrong and there's no way it's going to snow, after all. Then she continues that she can cook, at least. Umm... Right. What has that got to do with it snowing or not? Thankfully the TN explained it's apparently an idiom from Okinawa, or something, where it never snows. I imagine folks from the northern parts of Japan would be exactly as baffled as anyone else.
More importantly, it's quite funny Lento was for a decade held in high esteem at the guild for dramatically reducing the death rate of newbie adventurers by giving them invaluable information and lessons, yet now he doesn't suspect for a moment an unknown wood-and-rope bridge in the middle of a poisonous swamp could possibly be rotten.