There are people who say actually say that?!
hahahahahahahahah
*deep breath*
ahahahahahaha
Oh, I hope enthusiasts never change. <3
To answer your question: you'd have to be really desperate to count a cred multiple times because the weather is different, so I'd imagine not.
Then again, you'd have to be really really desperate to appease people to suggest that Orion is both a Hyper and a Giga, so....
On a serious note, I guess this does raise the slightly more interesting question about how much temperature can affect a coaster. One would expect - or at least, hope - that any potential temperature-caused changes to the metal of coasters is taken into account when designing/building rides, likely in the flex that track has. But could it actually affect how the cred rides in any noticeable way? I'd assume not, but I'm sure I've been wrong on equally trivial measures.
(This doesn't take into account the fact some creds have different wheels for different temperatures and weather conditions too, which are more there in mind of making sure the ride doesn't stall, but as a result can indeed impact ride experience...)