Rain. With both hands in loose “claw” shapes and palms down, move your hands down several times with firm movements. This indicates raindrops falling.
Ice. With both hands in “claw” shapes and palms down, hold your hands in front of your body and squeeze your thumbs and fingers in toward your palms. This indicates frozen and stiff. It's also the sign for “freeze” and “frozen.” “Water” is often signed before “ice.”