I am also a preservice teacher from Hawaii. Weather is a great science topic for kindergartners because it is relevant to their lives. It affects what they will wear for school, if they can jump in puddles, or throw a snowball. Or in the case of Hawaii, whether the surf will be good afterschool. So I would advise making a hands on experience. Our children need fewer worksheets about weather, and more chances to feel the thrill of rain streaming down their face. So let them go outside and observe the weather, than have them reflect on their experience. They could reflect by writing or drawing, singing, there are many options. But most importantly, don't tell them about the weather, let them hear, taste, touch and smell the weather.