Hail Cannons are devices which shoot shock waves into the air, with the idea being that they will prevent the formation of ice particles in the atmosphere. I have recreated this in Minecraft with my Weather Cannons Datapack, which will you allow you to alter the weather in vanilla, survival Minecraft!

With the Weather Cannon datapack, you can shoot splash potions into the sky to change the weather, so you will need to construct some kind of TNT cannon. After some experimentation on my own, I found that a decent one can be made fairly easily if you are familiar with how TNT cannons work in general. The higher the potion goes into the sky, the greater the % chance that it will be successful! Load the following potions into your cannon to receive their effects:

Speed Potion = Weather Clear
Regeneration Potion = Weather Rain
Strength Potion = Weather Thunderstorm

*Any duration or strength of the above potions will work

If you would like to track the flight of your weather potion capsule, simply hold a Lightning Rod in your hand. You will see a display above your hotbar which shows the y-value of the nearest potion.


Feel free to modify, reverse engineer, use in your projects, etc., but please do not redistribute without credit!