The chroma key feature will allow telling the weather forecast visually attractive to the audience. Whatever the weather is, there is always a story to tell to your audience.
A green screen lets you drop in whatever background images behind the subject when the desired background isn’t available—like a fictional, alien, historic, futuristic, or even just hard-to-access location. The green screen singles out the selected color (usually green) and digitally removes it by rendering it transparent. This lets the other image show through.