Snow is falling, konko. Note: Konko is the sound of falling snow and hail in Japanese

Hail(stone) is falling, konko.

Falling, falling

Falling without stopping.

Kaguya is happily running around the garden.

Kaguya is curled up inside the kotasu.

Aren't you enjoying this a bit too much?

What Kaguya's singing is in fact made up lyrics to a song named Yuki (雪). If you are interested, you can check this link: https://www.youtube.com/watch?v=ZAyS5jntwz8