Tis The Season
Are there certain "seasons" for catching lice? Some schools report that they see more cases of lice in the fall. Personally, I think this has more to do with the fact that students come back to school in the fall, and school is often where lice first gets noticed.
Lice can adapt to any weather and climate, as long as they have a nice warm head to live on. In my opinion, any season is lice season.