diff --git a/common/src/main/java/toughasnails/temperature/TemperatureHelperImpl.java b/common/src/main/java/toughasnails/temperature/TemperatureHelperImpl.java
index 63b60345..3f01d702 100644
--- a/common/src/main/java/toughasnails/temperature/TemperatureHelperImpl.java
+++ b/common/src/main/java/toughasnails/temperature/TemperatureHelperImpl.java
@@ -19,13 +19,13 @@
 import net.minecraft.world.level.block.CampfireBlock;
 import net.minecraft.world.level.block.CopperBulbBlock;
 import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.levelgen.Heightmap;
 import toughasnails.api.enchantment.TANEnchantments;
 import toughasnails.api.player.ITANPlayer;
 import toughasnails.api.potion.TANEffects;
 import toughasnails.api.temperature.*;
 import toughasnails.api.temperature.IProximityBlockModifier.Type;
 import toughasnails.block.entity.ThermoregulatorBlockEntity;
-import toughasnails.core.ToughAsNails;
 import toughasnails.init.ModConfig;
 import toughasnails.init.ModTags;
 
@@ -145,7 +145,7 @@ private static TemperatureLevel getBiomeTemperatureLevel(Level level, BlockPos p
         Holder<Biome> biome = level.getBiome(pos);
         float biomeTemperature = biome.value().getBaseTemperature();
 
-        if (!level.dimensionType().natural() || (pos.getY() > ModConfig.temperature.environmentalModifierAltitude || level.canSeeSky(pos)))
+        if (!level.dimensionType().natural() || (pos.getY() > ModConfig.temperature.environmentalModifierAltitude || pos.getY() >= level.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, pos).below().getY()))
         {
             if (biome.is(ModTags.Biomes.ICY_BIOMES)) return TemperatureLevel.ICY;
             else if (biome.is(ModTags.Biomes.COLD_BIOMES)) return TemperatureLevel.COLD;
@@ -191,7 +191,7 @@ private static TemperatureLevel nightModifier(Level level, BlockPos pos, Tempera
         boolean isNight = time >= 0.25F && time <= 0.75F;
 
         // Drop the temperature during the night
-        if (level.dimensionType().natural() && isNight && (pos.getY() > ModConfig.temperature.environmentalModifierAltitude || level.canSeeSky(pos)))
+        if (level.dimensionType().natural() && isNight && (pos.getY() > ModConfig.temperature.environmentalModifierAltitude || pos.getY() >= level.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, pos).below().getY()))
         {
             if (current == TemperatureLevel.HOT)
                 current = current.increment(ModConfig.temperature.nightHotTemperatureChange);
@@ -347,7 +347,7 @@ protected static TemperatureLevel internalModifier(Player player, TemperatureLev
 
     private static boolean isExposedToRain(Level level, BlockPos pos)
     {
-        return level.isRaining() && level.canSeeSky(pos);
+        return level.isRaining() && pos.getY() >= level.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, pos).below().getY();
     }
 
     private static boolean coldEnoughToSnow(Level level, Holder<Biome> biome, BlockPos pos)
diff --git a/common/src/main/resources/assets/toughasnails/textures/item/thermometer_00.png b/common/src/main/resources/assets/toughasnails/textures/item/thermometer_00.png
index 627d8bf8..4a8484fc 100644
Binary files a/common/src/main/resources/assets/toughasnails/textures/item/thermometer_00.png and b/common/src/main/resources/assets/toughasnails/textures/item/thermometer_00.png differ
diff --git a/forge/src/main/java/toughasnails/forge/init/ModCompatibility.java b/forge/src/main/java/toughasnails/forge/init/ModCompatibility.java
index c056903c..d3b949e0 100644
--- a/forge/src/main/java/toughasnails/forge/init/ModCompatibility.java
+++ b/forge/src/main/java/toughasnails/forge/init/ModCompatibility.java
@@ -8,6 +8,7 @@
 import net.minecraft.core.Holder;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.levelgen.Heightmap;
 import net.minecraftforge.fml.ModList;
 import sereneseasons.api.season.Season;
 import sereneseasons.api.season.SeasonHelper;
@@ -39,7 +40,7 @@ private static TemperatureLevel seasonModifier(Level level, BlockPos pos, Temper
         Holder<Biome> biome = level.getBiome(pos);
 
         // Only adjust if above the environmental modifier altitude
-        if (level.dimensionType().natural() && pos.getY() <= ModConfig.temperature.environmentalModifierAltitude && !level.canSeeSky(pos))
+        if (level.dimensionType().natural() && pos.getY() <= ModConfig.temperature.environmentalModifierAltitude && pos.getY() < level.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, pos).below().getY())
             return current;
 
         // Check if biome uses seasonal effects