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5C if you're wet through and hungry ain't good.
80kph winds not necessarily a problem but if trees and shit are coming down or debris is all over the road I'd probably wait it out rather than pushing on (depends if I was climbing or descending and how much potential shelter was around.
Also lots of standing water means you can't see potholes and some of those roads you don't want to find that deep one at speed, that's for sure.
I'm sure a major storm to a Spanish person is not a major storm to Scottish. 5C is a warm day in Scotland.