Every Autumn Comes the Bear by Jim Arnosky
Leaf Man by Lois Ehlert
The story of Leaf Man, who blows away - everything he blows past, such as chickens, orchards, and cows, is made of leaves. Perfect for reading before letting kids make their own leaf creations.
Mouse's First Fall by Lauren Thompson; illus. by Buket Erdogan
In this short and simple story, Mouse and his big sister Minka play in the leaves. It has basic colors, shapes and counting, and gorgeous illustrations. In the end, Minka hides in a pile of leaves, and kids will have fun looking for her and spying her tale. It's one of the "Mouse's First..." books, a great series for toddlers that introduces seasons and holidays.
Apples and Pumpkins by Anne Rockwell, illus. by Lizzy Rockwell
A young girl and her family visit a local farm to pick apples and pumpkins. When they get home they carve their pumpkin. The books ends with trick-or-treating, so I usually use this one closer to Halloween. (Or sometimes I simply end the book when the family leaves the farm...)
In November by Cynthia Rylant, illus. by Jill Kastner
This is a calm, quiet story about the things in November. It's not one I usually use for storytime, but it is a lovely book for one-on-one sharing, or a small group.
Fall Leaves Fall! by Zoe Hall, illus. by Shari Halpern
Ska-tat! by Kimberly Knutson