On the third day of our unusual heatwave I was hopefully looking up to the sky and saw these beautiful cloud formations.
Cirrocumulus belong to the High Cloud group (5000-13000 m). They are small rounded puffs and usually short-lived. Cirrocumulus is made of ice crystals but include liquid water droplets also.
Sometimes they look like the scales on a fish - a "mackerel" sky that may mean a change in the weather is on its way. And sure enough - to my greatest relief - by the evening our temperature has dropped by 20 degrees.