Temperature (1.17)

Temperature is a game mechanic introduced in Minecraft 1.17. Every block has a temperature between 0 and 100, which can be affected by biome, altitude, time of day, and blocks, and can cause positive or adverse effects on the player and other mobs.
Temperature is kept track of through a system of Temperature Points.
==Temperature classification==
Temperature
Temperature Points	Name 	Effects 	Natural Occurrence
0 	Unforgiving Cold	Health regeneration from eating disabled without sufficient cold protection,
constant cold-based damage, 4 damage every second	Underwater in the Frozen Ocean and Ice Spikes biomes
1-10 	Very Cold 	Health regeneration from eating disabled without sufficient cold protection,
constant cold-based damage, 2 damage every second	Underwater in most snowy biomes, air in ice spikes and frozen ocean biomes, air in snowy biomes at night
11-20 	Cold 	Health regeneration from eating disabled without sufficient cold protection	Snowy biomes in the day, ice blocks and packed ice blocks in warmer biomes, very high altitude (>150 blocks)
21-30 	Chilly 	None 	Caves in the overworld, water in temperate biomes, extreme hills and variants, non-snowy taigas, high altitude (>80 blocks)
31-60 	Temperate 	None 	Temperate biomes
61-70 	Hot 	Health regeneration from eating disabled while wearing armor (except for heat-resistant armor)
Damage taken while wearing cold-protective gear	Hot biomes (IE: Desert, Jungle)
71-80 	Very Hot 	Health regeneration from eating disabled while wearing armor (except for heat-resistant armor)
Water evaporates
Constant heat-based damage, 1 damage every second	Nether
81-90 	Fire 	Health regeneration from eating disabled without sufficient heat protection
Entities are lit on fire, 
Constant heat-based damage, 2 damage every second	Fire blocks, magma blocks
91-100 	Lava 	Health regeneration from eating disabled without sufficient heat protection
Entities are lit on fire,
Constant heat-based damage, 8 damage every second	Lava
==Effects on mobs==
Mobs
Mob 	Effects
 Blaze   Magma Cube 	Immune to heat damage. Will be inflicted with slowness in cold or lower temperatures, takes 2x cold-based damage, starts to die in cold areas
 Zombified Piglin  Charred ZombieWither Skeleton	Immune to heat damage
 Spider   Cave Spider 	Will be inflicted with slowness in cold or lower temperatures, takes 2x cold-based damage
 Silverfish Luminescent Silverfish 
Termite
 Poison Crawler	Will be inflicted with slowness in cold or lower temperatures, takes 2x cold-based damage, starts to die in cold areas
 Bee  Wasp 
Mosquito
 Torch Moth 	Takes 2x cold-based damage, starts to die in cold areas
125px Skiron 	Immune to all cold-based damage
 Wolf Polar Bear 
Stray
Blue Dinocerous
 (Minecraft 1.18)	Immune to all cold-based damage, takes 2x heat-based damage
 Wither  Skeleton Fish 
Black Dinocerous
 (Minecraft 1.18)	Immune to all temperature-based damage
Category:Concepts