Weather Controllers are Noble made technologies. A dozen or so devices buried beneath the seven continents and apparently set up by the Nobility. thanks to them, the most comfortable levels of heat and humidity for both Nobility and Humans are maintained all year round at night, at the very least. On occasion there are violent thunderstorms, blizzards, and more, the result of programs drafted by uniformity hating Nobles to re-create the season of yore. Since the Revolutionary Army didn't destroy the devices, they continue to control the weather in some parts of the Frontier. In others, like Tepes or Florence, the weather controllers are apparently malfunctioning.
The Mountain Bandits to control the weather by remote control in "sunlight mode", Erde focused it into a tight beam. The temperature can be adjusted, raising the beam as high as twenty thousand degrees. The device can also be used to make it rain or snow.