1. Weather is still cold.

Question

2. The weather is still cold.
3. It is still cold.
.............................
Is #1 grammatical? The is missing?

Answer 1

All are grammatically correct, but #1 is not used for the same purpose as #2 and #3.

Answer 2

For example, #2 is 2 points. Then what about #1? If a boy writes #1, how would you grade the problem? One point or no point?

Answer 3

I’d give it no point.