Minecraft wiki entry for Rain, associated text: While fishing, there is a shorter wait time on average to get a bite during rain.[5]
Wolves shake themselves dry if they are not moving (certain versions only).
Farmland becomes hydrated if it is not already.[6]
Rain fills up cauldrons with water, albeit slowly.
Tridents enchanted with Riptide can be used on land.
Tridents with the Impaling enchantment deals more damage during rain.‌[Bedrock Edition only]
Villagers enter houses and stop their daily schedule.‌[Bedrock Edition only]
Bees that are outside return to their hives.
Players are granted the Conduit Power status effect from nearby[more information needed] conduits without having to be in the same body of water.
Axolotls and dolphins can survive outside of water.