#Folklore provides different indications that can suggest a severe #winter:

Squirrels gathering nuts in a flurry,

Will cause snow to gather in a hurry.

See how high the hornets nest,

‘twill tell how high the snow will rest.

Onion’s skin very thin,

Mild winter coming in;

Onion’s skin thick and tough,

Coming winter cold and rough.

https://www.almanac.com/signs-bad-winter-squirrels-onion-skins-and-other-folklore