Polymarket, a decentralized prediction market, has turned weather forecasts into a professional betting arena, with daily trading volumes reaching $2 million. The platform allows participants to leverage collective intelligence to challenge traditional meteorological agencies, launching weather prediction markets in cities like Hong Kong and Shanghai. This innovative approach enables users to profit from accurate predictions, with elite teams from professional institutions treating it as a practice ground for testing predictive models. The market has become highly specialized, with over 55.7% of trades focused on exact temperature predictions. The platform's decentralized nature, using blockchain technology and stablecoins, facilitates global transactions without intermediaries. As prediction markets penetrate daily life, they offer new ways to hedge against risks and adjust business strategies. However, they also face challenges such as potential manipulation by large capital holders and regulatory uncertainties, as they operate in gray areas involving financial derivatives and gambling.