A few ways to make the most out of these changes...
Make "rain art!" Stand outside with a paper plate and a few tubes of food coloring. As the rain drips on to the plate squirt a few drops of food coloring onto it and use a brush to blend and swirl the colors. To personalize the art project, before you go outside use a white crayon to write your name or make a fun design on the plate. Once the plate is colored bring it inside and lay on a flat surface to dry, enjoy your creative "rain art!"
Make an Umbrella! Open up a plain umbrella inside, use waterproof fabric paints to decorate the inside and outsides of the umbrella to create an original and personalized umbrella to last all the wet days of the season.
Listen and learn about the water cycle! Water cycle song
Create a rain gage! Using an old pringles container (or something similar), measure once inch intervals from the bottom up and stick toothpicks into the tube at each interval. Glue beads or buttons on the ends of the toothpicks so they don't prick any fingers. :) Each time it rains place the homemade rain gauge outside to keep track of how many inches of rain are falling to the ground.