Sometimes it snows and rains at the same time

That's because you are in a biome where it starts snowing at a certain height (e.g. extreme hills)

As mentioned above, when you reach a really high altitude it will snow instead of rain.

Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.

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