Highest temperature in Paris on June 6?

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Market context

The Paris-Le Bourget Airport Station will record a daily high temperature on 6 June 2026, with the market resolving to whichever Celsius range captures that peak reading. The 0% crowd probability suggests traders are either uncertain about the range distribution or treating this as a genuine weather forecast challenge rather than a certainty bet.

Historical June temperatures at Paris-Le Bourget show typical highs between 22–26°C, though the station has recorded extremes reaching 28–30°C during heat waves. The 30-year climate normal for early June sits around 24°C, making mid-range outcomes (22–26°C brackets) statistically favourable. The absence of crowd conviction here likely reflects genuine forecast difficulty at an 18-month remove; seasonal patterns favour warm but not exceptional conditions for that date, yet European heat events have become more frequent and intense. Traders should weight historical frequency against recent climatic shifts when assessing which temperature bands offer value.

The key catalyst is the European weather pattern developing in late May 2026, particularly whether high-pressure systems establish over the continent or Atlantic systems bring cooler air. Météo-France and the UK Met Office will issue increasingly precise forecasts from mid-May onwards. Any significant heat dome affecting western Europe in the weeks preceding 6 June would shift expectations upward; conversely, unsettled Atlantic patterns would favour lower ranges. Wunderground's historical data for Paris-Le Bourget is reliable and widely used by meteorological traders, making settlement straightforward once the day passes.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Who Will Win?

Zero. Who Will Win routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.