The answer to that could only truly be answered by Stephen Hillenburg. However, you can hypothesize that Sandy's treedome is very technologically advanced, and has a superior climate control system, that can make is snow inside the dome even when outside is warm. Either that, or don't think about it too much: it's a cartoon and it had to be snowing for the joke to work.
i don't know, but maybe because it was snowing during the movie which means it probaly took place in the winter time, and Christmas is in the winter time
It is unusual, but I have definitely seen it before. In fact, in New York I have seen a lot of people using umbrellas when it was snowing.
Special adaptive features: Several species usually overwinter on the bottom of the pool, to surface again the following spring. Duckweed, however, remains green throughout the winter.
Fish go further down than the ice. The ice usually doesn't freeze all the way to the bottom. If the fish are trapped in shallow water or if the lake or stream freezes to the bottom, they will freeze.
At the very bottom of the Atlantic Ocean it is about 2.5 degrees Celsius, so 36.5 degrees Fahrenheit
in winter
Winter
winter snowing and overcast
snowing
freezing, frosting, boring, snowing
It is very hot & dry in the summer and is cold and snowing in the winter.
glistening, snowing, playing
They don't stay when it is snowing. Hasn't anybody learned that birds fly south in the winter?
To say it is snowing in Spanish you would say: Está nevando
because...theres ice...and its snowing...
Sure. Don't do it if it is snowing, if you remove the sheathing, otherwise fly at it
you have to get it in summer to were it in winter and maybe new people will go were did you get that?