Cloud cover vs Overcast

When to use each in English, with meaning, register, and examples.

Cloud cover

Top 5,000 (fairly common)

Overcast

Beyond 10,000 (less common)
Most common: Cloud cover
 Cloud coverOvercast
Pronunciation🇬🇧 //klaʊd ˈkʌvə//🇺🇸 //klaʊd ˈkʌvɚ//🇬🇧 //əʊvəˈkɑːst//🇺🇸 //oʊvərˈkæst//
MeaningThe amount of clouds in the sky.Dark and cloudy weather, with no sunlight.
ExampleThe cloud cover today makes it feel cooler than usual.The sky was overcast all day, making it feel quite gloomy.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Beyond 10,000 (less common)
Collocationsthick cloud cover, increase in cloud cover, low cloud coverovercast skies, overcast conditions, overcast day, overcast weather, overcast morning
Common mistakesConfused with 'cloudy', which describes the weather condition., Used incorrectly as a verb; it's a noun phrase.Confused with 'cloudy' - 'overcast' means completely covered with clouds., Using it in non-weather contexts incorrectly., Assuming it means rain when it may not.
Usage notesUse in weather contexts when discussing how cloudy it is. More formal in meteorological reports and casual in daily conversation. Avoid in non-weather discussions.Used to describe the weather; appropriate for both formal and informal contexts. Avoid using it for clear or sunny conditions.

Frequently asked questions: Cloud cover vs Overcast

What's the difference between Cloud cover and Overcast?

Cloud cover: The amount of clouds in the sky. Overcast: Dark and cloudy weather, with no sunlight.

Which is more common: Cloud cover and Overcast?

Cloud cover is the most common in everyday English.

Can you show an example of each?

Cloud cover: The cloud cover today makes it feel cooler than usual. Overcast: The sky was overcast all day, making it feel quite gloomy.

Can I use Cloud cover and Overcast interchangeably?

Not always. Cloud cover and Overcast are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.