
thumb|right|upright=1.2|A completely overcast sky in Mehamn, Norway.
thumb|right|upright=1.2|A completely overcast sky in Mehamn, Norway.
Overcast or overcast weather, as defined by the World Meteorological Organization, is the meteorological condition of clouds obscuring at least 95% of the sky. However, the total cloud cover must not be entirely due to obscuring phenomena near the surface, such as fog.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).