To celebrate the weather while engaging a child's sense of hearing and motor skills, have kids do a rain dance. Gather the children into a circle, and have them simulate the different sounds of weather. Instruct them to stomp on the floor to make thunder, pat their knees for a hard rain, rub their hands together to make a drizzle, and rub their fingers together to make a mist. Then pass out coffee filters that have been cut in half, along with marking pens. Have pre-kindergarten children color rainbows on the coffee filters, then let them dip their fingers in water and rub it all over the coffee filter, so the colors smear slightly, like a rainbow after a rain.
Take preschoolers outdoors for a treasure hunt in nature. Have them find and name various items, like an acorn, shells, or a purple flower. If children are still very young, just ask them to point at the items you name. As their language skills develop, at their own pace, have them repeat the names of the items as they find them. Then, take kids indoors and let them engage in imaginative play by acting like various animals found in nature. Give prompts like, "Show me a lion," or, "Let's all pretend to be bears right now."
Have kids pretend like they are cars, in order to learn how to follow instructions. Tell children to "drive" around the room, obeying traffic signals. Let them know that when you say green, they should move freely. When you say yellow, they should move in slow motion. When you say red, they should stop. Help kids get into the game by letting them make super loud car "vroom vroom" noises, and screeches when it is time to stop. Then have kids build their own cars, using blocks or Legos. Allow kids a show-and-tell time, where they can show the other kids the cars they have made.
Create your very own pre-kindergarten Olympic games. Show kids an Olympic flag, and explain that the different colored rings represent the big land areas on our map and the people that live on them. Say that the rings interlock to show friendship between all these people. Pass out crayons and paper, and have kids make their very own Olympic flags. Then, go outside and host a few games of your own. Have a race where kids must run backwards to the finish line, have a race where kids must carry an egg in a spoon across the finish line, and have a race where kids must pair off and run with a balloon squeezed between them across the finish line. At the end of your games, take an official photo of all your Olympic champions, and put it up on the wall, along with all the DIY flags.