Thunderstorm

A thunderstorm is an uncommon weather condition where lightning strikes occur and the sky becomes dark enough for monsters to spawn and players to sleep through the thunderstorm at any time of day.

Thunderstorms are an uncommon temporary, global occurrence[1] that can happen randomly at any time, within the Overworld. Whether it rains, snows, or no precipitation is active during a thunderstorm varies depending on the temperature of the biome, as well as the current altitude.

Thunderstorms can be skipped entirely with the use of a bed, regardless of the time of day.