Snow

A snowball

Snow covers Club Penguin Island and it is almost in every room. According to a penguin who appeared in Secret Mission 7, the best snow is at the Snow Forts.

Trivia

Penguins can throw a snowball by clicking on the snowball icon on the toolbar, or by pressing "T" on your keyboard.
On the Clock Tower, there is a target to throw snowballs at, which also powers the tower.
There is no snow at the Night Club, Dance Lounge, Coffee Shop, Book Room, Gift Shop, Pet Shop, Stage, Pizza Parlor, Boiler Room, Ski Lodge, Sport Shop, Dojo, Ninja Hideout, The HQ, and Inside the Lighthouse. Strangely enough, you can still make snowballs.
There was snow in the Lodge Attic for the penguins to make snow sculptures with.
There is snow on top of the Pizza Parlor, Stage, Pet Shop, Gift Shop, Night Club, Coffee Shop, Sport Shop and the Ski Lodge.
Igloos are made of ice and snow.
There is a way to throw the snowballs quite fast. First you make it so you can't type. You can do this by clicking on anywhere but the chat bar. Then press T and move your mouse to the desired spot. Click and press T and click the mouse button really fast (then repeat) and pretty soon you throwing snowballs very fast. However, nobody can see this but you.
It is a primary Card-Jitsu element.
There is a ton of snow at the Christmas Parties, which are used in April at the Festival of Snow.
The only room that won't have snow lying on the ground is the Fire Dojo. The heat from the Volcano will melt the snow.