If you want a reasonably detailed look at world-building climate resources, Karro and Korba both have wonderful process threads on which I based my own work-in-progress world ()
Korba: Calen Ndor
Karro: [Unnamed World]
Mine is in my signature, if you're curious.

There may also be others more recent than the three of us; I've been somewhat quiet on the boards this semester due to school, though, so I've likely missed the majority of them.

If you want to get really detailed with all aspects of worldbuilding, there is a wonderful resource here: http://www.cix.co.uk/~morven/worldkit/index.html#geo

Or, if you just want to worry about climate alone, right now, the Climate Cookbook, which is a part of that worldbuilding resource, is a great place to start.

-asp