What idioms are there to indicate that autumn is very cold?

autumn/autumnal scenery

Refers to autumn scenery. Su Songshi's "Gift" said: "Good years must be remembered, especially when it is orange, yellow and green."

Autumn wind is rustling

Rustle: describes the sound of wind or horses.

The autumn wind is rustling.

Bleak: Describe the sound of the wind blowing trees.

Autumn wind is rustling

Sese: Describe a slight sound.

Autumn wind shrinks