Paper/paper-server/patches/sources/net/minecraft/server/commands/WeatherCommand.java.patch

--- a/net/minecraft/server/commands/WeatherCommand.java
+++ b/net/minecraft/server/commands/WeatherCommand.java
@@ -44,23 +_,23 @@
     }
 
     private static int getDuration(CommandSourceStack source, int time, IntProvider timeProvider) {
-        return time == -1 ? timeProvider.sample(source.getServer().overworld().getRandom()) : time;
+        return time == -1 ? timeProvider.sample(source.getLevel().getRandom()) : time; // CraftBukkit - SPIGOT-7680: per-world
     }
 
     private static int setClear(CommandSourceStack source, int time) {
-        source.getServer().overworld().setWeatherParameters(getDuration(source, time, ServerLevel.RAIN_DELAY), 0, false, false);
+        source.getLevel().setWeatherParameters(getDuration(source, time, ServerLevel.RAIN_DELAY), 0, false, false); // CraftBukkit - SPIGOT-7680: per-world
         source.sendSuccess(() -> Component.translatable("commands.weather.set.clear"), true);
         return time;
     }
 
     private static int setRain(CommandSourceStack source, int time) {
-        source.getServer().overworld().setWeatherParameters(0, getDuration(source, time, ServerLevel.RAIN_DURATION), true, false);
+        source.getLevel().setWeatherParameters(0, getDuration(source, time, ServerLevel.RAIN_DURATION), true, false); // CraftBukkit - SPIGOT-7680: per-world
         source.sendSuccess(() -> Component.translatable("commands.weather.set.rain"), true);
         return time;
     }
 
     private static int setThunder(CommandSourceStack source, int time) {
-        source.getServer().overworld().setWeatherParameters(0, getDuration(source, time, ServerLevel.THUNDER_DURATION), true, true);
+        source.getLevel().setWeatherParameters(0, getDuration(source, time, ServerLevel.THUNDER_DURATION), true, true); // CraftBukkit - SPIGOT-7680: per-world
         source.sendSuccess(() -> Component.translatable("commands.weather.set.thunder"), true);
         return time;
     }