The Bug
It can snow in stony shores from y = 118 and above
Reproduce
Seed: 2178518626950662526
Coords: /execute in minecraft:overworld run tp @s -550.60 129.43 1002.57 3020.93 31.18
Observed Result
It snowed above Y = 118 and above in the biome
Expected Result
It wouldn't snow from Y = 118 and above
Can confirm, might duplicate MC-240699.