Here’s our mythbuster breakdown on whether the moon can predict the weather. Moon halos, or lunar halos, form when light refracts off of ice crystals in a thin layer of cirrus clouds.

A moon dog occurs at night in the winter when the moon is full, or near full, casting light through high clouds.

Here's when to spot a lunar halo in the night sky Although many lunar phenomena are one-night-only events, a ring around the moon is much less elusive. Also known as a lunar halo, a bright white ...