What type of cloud usually covers the whole sky and brings gray days?

Answer 1

Stratus clouds are the ones that typically do this, at least without bringing storms. They are low-level clouds with a fairly uniform base and cover huge sections of the sky at once.

Answer 2

Stratus clouds are low-level clouds that often cover the entire sky, creating overcast and gray days. These clouds are typically associated with stable weather conditions and can bring light drizzle or steady rain.

Answer 3

STRATUS. The ones like blankets that usually don't bring too much heavy rain.