What type of clouds typically indicate fair weather?

Cirrus clouds are typically high-altitude clouds that are wispy and thin in appearance. They usually form at altitudes above 20,000 feet and are made up of ice crystals. These clouds are often associated with fair weather because they indicate stable atmospheric conditions. When cirrus clouds are present, they suggest that the weather is currently calm and clear, without significant disturbances. Additionally, they can sometimes signal a change in the weather, as their presence might indicate an approaching warm front, but in themselves, they are not associated with stormy weather.

In contrast, other cloud types like cumulonimbus, stratus, and nimbostratus tend to correlate with varying degrees of precipitation or stormy conditions, making them less indicative of fair weather. Understanding the characteristics of different cloud types can help in predicting weather patterns and conditions effectively.