Water Cycle - Magic School Bus. We watched this one today, and it really connected some dots for Nugget. If you enjoy the show, buy the boxed set on DVD. One of our best resources for fun leaping-off points for learning.
Science games are great ways to increase collaboration to learn facts about weather. These games are best used in groups of 2- 4 people and can be used during a guided practice or review portion of a lesson plan. The only materials needed are the games, dice, and/or a spinner/pencil.
3 of my favorite water cycle, rain cycle experiments. These science experiments are simple to set up and use common household items. http://lessons4littleones.com/2015/04/15/water-cycle-rain-cycle-science-experiments/