what is overcast weather

Overcast weather is a meteorological condition where clouds obscure at least 95% of the sky. The total cloud cover must not be entirely due to obscuring phenomena near the ground. An overcast sky is usually described as a sky that is 100% and completely covered in clouds with zero breaks in between. This is usually composed of widespread, uniform gray clouds that sit fairly low in the sky such as a deck of stratus or nimbostratus. Overcast sky conditions occur when clouds cover all or most of the sky and cause low visibility conditions. The sky looks dull and the light is usually dimmer than on a sunny day. In summary, overcast weather is characterized by extensive cloud cover that obscures most of the sky and reduces visibility.