You may occasionally notice a ring or halo around the moon, which in folklore is taken as a sign of rain or other precipitation. There are even sayings about rain prediction: “A ring around the moon, means that rain will come real soon”. “If the moon shows a silver shield, don’t be afraid to reap…
Occasionally, especially on cold winter nights, I see a large ring around the Moon. What causes this?
What causes a ring or halo around the Moon?
Do You See A Moon Halo Or A Moonbow? - Farmers' Almanac - Plan Your Day. Grow Your Life.
Here's what's causing that bright ring around the moon
Ring Around the Moon
What causes a ring around the moon? - Orlando Lanes
Why was there a ring around the moon Monday night?
What caused this colorful halo around the moon?
Richard Dillon - Ring Around The Moon Review - Best New Age CDs
Halo halo halo, what's that in the sky?