under the weather

how's the weather

Indicating a change of subject to unimportant topics.

keep a weather eye open

to maintain a background awareness of something; to remain alert to changes without it occupying one's full attention.

make heavy weather

To make progress only with difficulty.

make the weather

To be extraordinarily effective, especially when in a position of authority.

stormy weather

Used to describe a period of troubles and difficulties, especially in terms of relationships.

talk about the weather

To chit-chat; to shoot the breeze.

weather the storm

To reach the end of a very difficult situation without too much harm or damage.