* Nimbostratus are dark, gray, and often cover the entire sky. They are associated with continuous, steady rain or snow.

* Cold weather is a common condition for these clouds.

* Storms are often associated with nimbostratus clouds, as they produce precipitation for extended periods.

Other cloud types you might see include:

* Cumulonimbus (thunderstorm clouds): These are towering, massive clouds with an anvil-shaped top. While they bring heavy rain and thunderstorms, they are less common on a cold stormy day.

* Altostratus: These are thin, sheet-like clouds that often cover the entire sky. They can be associated with rain or snow, but usually not as heavy as nimbostratus.

So, if you're experiencing a cold stormy day with persistent rain or snow, you're likely looking at a nimbostratus sky!