Weather Experiments for Kids: Make a Rain Cloud in a Jar (2026)

Experiment 1: Rain Cloud in a Jar

Materials: glass jar, water, shaving cream, blue food coloring, dropper

Fill the jar 3/4 with water. Add a "cloud" of shaving cream on top. Using the dropper, add blue food coloring to the cloud. Watch as the color seeps through and creates "rain" in the water below!

The Science: This demonstrates how clouds become saturated with water vapor. When they can't hold any more moisture, precipitation occurs — just like the food coloring falling through.

Experiment 2: Tornado in a Bottle

Materials: two empty 2-liter bottles, water, duct tape, food coloring, glitter

Fill one bottle 3/4 with water. Add food coloring and glitter. Tape the mouths of both bottles together. Flip and swirl — watch the vortex form!

The Science: The swirling water creates a vortex similar to real tornadoes. The air in the empty bottle moves up while water moves down, creating the characteristic funnel shape.

Experiment 3: Static Lightning

Rub a balloon on your hair, then bring it near a metal doorknob. See and feel the tiny spark! This is the same principle as lightning, just on a much smaller scale.