Highest temperature in Paris on June 13?

On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, the highest temperature in Paris on June 13 is typically structured as a set of discrete outcome buckets—for example, ranges like 20–22°C, 22–24°C, 24–26°C, and so on. Each bucket trades as a separate contract with its own price, reflecting the probability traders assign to that temperature range occurring. Prices move based on order flow, new weather data, and seasonal climate patterns. Traders buy contracts they believe are underpriced and sell those they view as overpriced, with the market price converging toward the realized outcome as June 13 approaches.

The market resolves on Jun 13, 2026, after the highest temperature in Paris on June 13, 2026, has been recorded. Resolution is determined by official temperature data from a designated meteorological source, typically France's national weather authority or a widely recognized weather station in Paris. The outcome is the single highest temperature reading on that calendar day, and the winning contract is the outcome bucket that contains that final recorded value. All other contracts resolve to zero, and winning contracts pay out their full notional value.

Major weather pattern shifts, seasonal climate anomalies, and updated ensemble forecasts from meteorological centers will drive price movement. A heat dome or high-pressure system moving over Western Europe in early June could push odds toward higher temperatures, while Atlantic storm systems or cooler air masses could shift expectations downward. Long-range climate indices, such as the North Atlantic Oscillation or Mediterranean sea-surface temperatures, influence June weather in Paris. As June 13 approaches, daily weather models become more precise, causing sharp repricing. Media coverage of extreme weather events elsewhere may also shift trader sentiment about regional heat risk.