Free Weather Lapbook - This site includes an instructional YouTube video.
You will need Weather Words and What They Mean by Gail Gibbons.
Pros - Great Project Based Learning project, very thorough weather study for second grade
Cons - Takes many copies (I would probably leave out the weather predictions and combination clouds page), may take longer than you want
Website for Kids: What is Weather?
Water Cycle Reader's Theater Script
From Teachers Pay Teachers:
At this time, these resources are free.
Weather Unit by Living Life Intentionally
Make an Anemometer by Elementary Contessa
Fog Experiment by Camilla Barry
Water Cycle Song by Jaya Maharajh
Weather in a Cup Experiment by The Teaching Reef
Water Cycle Bracelet by Meaghan Kimbrell
A Cloudy Serenade
The Thunder Giant