Arakish, this is great stuff - I've just begin poking at it but I think it's a good gaming summary for people who want to dig into climo. As a research meteorologist I always have to check my enthusiasm for over-analyzing the atmospheric stuff. But for those who want some basic realism to their world climate, this is great.
Several years ago I was starting an old-school AD&D 1e Greyhawk campaign and I pre-did 3-months of weather. I cannot tell you how accurate it was, but I liked having that information at hand. While many deem such stuff as "minutia" I think the weather is rather important and can have a huge effect on all types of gaming situations.
I agree, RandalThor. I actually haven't gone into daily weather for most of my games, but lately I've at least added general note. I went so far as to put a snowstorm followed by a rain event in, causing flooding in a lakeside town where the party was. They really got into the story, I was actually rather surprised.
The other thing one of my players asked for, to give a sense of place, was photos of analog real-world places. So now I have a folder of photos that show the forests, swamps, grasslands, mountains, rivers, etc. they've adventured through. It's gotten to where they ask "Do you have photos for this area?"