Weather is a game mechanic which provides an extra level of immersion for players of Minecraft, as the effects are intended to somewhat mirror real-world phenomenon. There are a few different types of weather effects, which only occur in the Overworld. Weather may have positive or negative effects on the environment, Mobs or Players.
Rain is a semi-common weather occurrence and is one of the two possible forms of precipitation. When it is raining, blue particles streak directly down from the sky until they come into contact with a surface. Small blue particles are left for a few seconds when individual droplets hit the ground (similar to how drops can seep through blocks when seen from below).
- Monsters cannot spawn in the rain during daylight (light level 12).
- Rain will extinguish fires upon the surface of the overworld and even mobs who may happen to be on fire.
- You are unable to hear rain when at the bottom of the map.
- Passive mobs will jump up and down, trying to keep dry.
- On multiplayer servers, you can toggle between rain and clear skies using the "toggle downfall" command.
Thunderstorms (sometimes called Thunder or Lightning) are a special type of weather that can occur anywhere (except for Desert Biomes). They are considered dangerous because they not only make the environment dark enough for hostile mobs to spawn, but have various effects on certain mobs, nearly all of which are bad for the player. Pigs, if hit by lightning become Zombie Pigmen, Villagers become Witches, and Creepers become a variant known as "Charged Creepers". Lightning can also set blocks on Fire.
As of The Combat Update, if a Horse is hit by lightning, it will become a skeleton trap horse; which are much more powerful than the original. To make things worse, additional skeletal horses and riders may appear near the horse that was originally struck. If lightning hits within a few blocks/meters of any mob, they lose 2 and a half hearts of health.
Snow occurs in cold or snowy Biomes, such as the Ice Plains Biome, Ice Spike Plains, and Cold Taiga Biomes. Snow can also occur in the Extreme Hills Biome, at high altitudes. When Snow falls, it can cover the land with a layer of snow, also creating "ice caps" on the mountains of an Extreme Hills biome.
Overcast occurs in dry biomes, such as Deserts, Savannas, and Mesa Biomes. While it does not rain in those biomes, the light level will still drop and the Sun and Moon become shrouded, so the player can only tell their position with a clock. Overcast can be a useful sign that weather is occurring elsewhere while the player is in a Desert, Savanna or Mesa.
- Since thunderstorms are darker than rain, it is possible for mobs to spawn at any time of day, and night.
- The player can still sleep when there is a thunderstorm occurring.
- It is very rare, but, it is possible for a lightning bolt to activate a Nether Portal.
- If a Creeper is struck by the thunderstorm, it will turn into a Charged Creeper. If it gets struck again, it dies unless it was spawned a charged creeper. This is because lightning deals damage.
- Rain can deal damage to Endermen, Blazes and Snow Golems.
- If Endermen are out in the Overworld during a rain storm, they will rapidly teleport around randomly as they attempt to find a spot where they won't get wet.
- Weather was introduced to Minecraft in update 1.5.
- Lightning, which only occurs during Thunderstorms, has the ability to harm the player, turn the pig into a Zombie Pigman, and turn charge a regular Creeper. There's only a slim chance of that happening.
- Weather can be changed using the weather command. To use the weather command the player must type: /weather <clear/rainy/stormy>. The command will then say "Turning to (rainy/stormy/clear)".
- When the sun is out, it is referred to as clear weather.
- If you leave a cauldron in the rain, it may fill it up if a block tick hits the cauldron (small chance)
- If you have a block of farmland out when it is raining, it may become hydrated.