Looking on the internet deeply has found these results:

sky completely covered by clouds is the most popular phrase on the web.

sky completely covered by the clouds 10 results on the web	sky completely covered by clouds 115 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	May 1, 2010 ... 8 eighths, sky completely covered by clouds. 9. Sky obscured by fog, snow, or other meteorological phenomena. /. Cloud cover indescernible�... Cloudy Sky completely covered by clouds or a few small blue patches. I think some of the sunshine requirements as put forth by Flight Simmer�... Overcast sky. Sky completely covered by clouds, no sun visible. (Source: Daylighting Design and Performance, Gregg Ander, FAIA, 1995)�... Fractional cloudiness, ranging from 0 (no clouds) to 1 (sky completely covered by clouds) for the SHEBA and Barrow sites. The time period shown extends from�...

sky completely covered by the clouds

10 results on the web

sky completely covered by clouds

115 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

May 1, 2010 ... 8 eighths, sky completely covered by clouds. 9. Sky obscured by fog, snow, or other meteorological phenomena. /. Cloud cover indescernible�...
Cloudy
Sky completely covered by clouds or a few small blue patches. I think some of the sunshine requirements as put forth by Flight Simmer�...
Overcast sky. Sky completely covered by clouds, no sun visible. (Source: Daylighting Design and Performance, Gregg Ander, FAIA, 1995)�...
Fractional cloudiness, ranging from 0 (no clouds) to 1 (sky completely covered by clouds) for the SHEBA and Barrow sites. The time period shown extends from�...