You know you can make that a weather rock. Hang it from a string, cord, macrame, what ever. Just watch it then,
if it's swinging = windy
If shadow under it = sun is shining
If it's wet = raining
If you can't see it without a flashlight = nighttime
if it's swinging = windy
If shadow under it = sun is shining
If it's wet = raining
If you can't see it without a flashlight = nighttime