Well, perhaps he first notices it during a really intense storm at Hogwarts. Maybe he's out in the courtyard and suddenly the wind starts to change direction as he gets a strange feeling inside. It could be that he was in a Quidditch match and the clouds above started to move in an odd way when he was concentrating hard on winning.
Another possibility is that Naruto acquires the ability to control the weather from a powerful artifact. He might stumble upon an ancient relic during one of his adventures. This artifact has the power to control the weather, and once Naruto touches it or figures out how to use it, he gains this extraordinary ability. It could be that the artifact was created by a long - forgotten civilization that had mastered the art of weather manipulation.
In some fanfictions, Naruto might gain the ability to control the weather through a special training. Maybe he discovers a hidden jutsu or power within himself during a difficult mission or in a secret place. For example, he could find an ancient scroll that teaches him weather - controlling techniques.
He might also face challenges from dark wizards. They could try to use his power for their own evil purposes. For instance, they might try to force him to create a huge storm to destroy a rival wizarding community. Harry would have to resist their influence and use his power for good instead.
The recommended novel "Superhuman Psychiatrist" was a fantasy novel about a world where everyone could awaken a superpower when they turned eighteen. The protagonist was diagnosed with schizophrenia in the psychiatric hospital. Later, he discovered that he had superpowers, such as the ability to "teleport, mental attack," and so on. In this world, all kinds of mental illnesses turned into all kinds of strange superpowers, including mental control, flight, and so on. It's a very interesting superpower novel ~ I hope you like it~
Well, in such a fanfiction, he might control space through his magic wand. Maybe he uses a special spell that he discovers or invents, which allows him to manipulate the fabric of space, like creating portals or warping distances.
One consequence could be that the wizarding world starts to view him with even more suspicion and fear. People are already afraid of dementors, and if Harry can control them, they might think he's becoming too powerful or even turning to the dark side.
It could also be due to his own inner strength and growth as a wizard. Harry has faced so many challenges and traumas throughout his life. His experiences might have awakened a latent power within him that allows him to control dementors. His strong willpower and determination, which have been developed over years of fighting against the dark forces, could be the key factor in this newfound ability.
I recommend "Sky Crushing Martial God" to you. The main character is called Han Lingfeng, a "righteous and righteous hero" in Jianghu who transmigrated into a useless person who can't cultivate. He relied on a magical wheel to complete the 'Trash's Counterattack' and turned the clouds and rain with a flip of his hand on this unfamiliar continent, breaking the heavens and becoming a god with martial arts. I hope you like this fairy's recommendation. Muah ~😗