The Snowy Day by Ezra Jack Keats is a Caldecott winner. The book has beautiful artwork. It is quite simplistic, but very effective for the clean simplicity for the book.
The story recounts a boy Peter's day of adventure in the snow. I enjoyed this story because it is an incredibly happy and pleasant realistic fiction book. The book does not really have an antagonist, which could lead you to assume that it is without substance, but this is not the case. This book shows, realistically, that some days there are no antagonists and they are just good. I think this is an important idea to share with students.
Here is a lesson plan for very young students just starting to learn about different types of weather that uses The Snowy Day.
http://www.scholastic.com/teachers/lesson-plan/snowy-day-lesson-plan

