Rain is not a very rare weather occurrence in Minecraft. When its raining, 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) It is one of the two forms of precipitation. Rain is fairly common and on a multiplayer server, you can toggle rain and clear skies using the toggle downfall command. Note that monsters can spawn in the rain and it will also extinguish fires upon the surface and even on flaming Mobs. You will also not be able to hear rain when at the bottom of the map. Animals will jump up and down, trying to keep dry.
Thunderstorms (sometimes called Thunder or Lightning) is a special type of Weather that can occur anywhere (except for Deserts). Since they don't occur very often, they're considered dangerous because they can turn Pigs into Zombie Pigmen and turn a Creeper into a Charged Creeper, it's also dark enough for hostile mobs to spawn, as of 1.7.2, the light level in thunder storms drop to 3, and the player can sleep through lightningstorms. If lightning hits the player, he or she would lose 2 and a half hearts from the damage. Lightning can set blocks on fire.
- 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. This is called "overload" or "overcharged."
- Thunderstorms can deal damage to Endermen, Blazes and Snow Golems.
- Desert biomes will not show any type of weather besides clear.
- Weather was introduced to Minecraft in Minecraft Beta 1.5.
- Lightning, which only occurs during rainstorms, has the ability to harm the player, turn the average pig into a Zombie Pigman, and create a Super-Charged 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 it's raining in other biomes, it'll snow in snow biomes.
- In desert and savanna biomes, it'll not rain at all.
- It's possible to have thunderstorms when it's not actually raining.
- In desert biomes when other biomes are raining/snowing, The clouds will turn grey but not rain.