Highest temperature in Paris on May 26?

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Market context

On 26 May 2026, the highest temperature recorded at Paris-Le Bourget Airport Station will determine the settlement outcome. This meteorological reading, sourced from Weather Underground's historical data for that specific date, establishes a factual baseline independent of forecasts or models. The resolution hinges on actual recorded conditions rather than predictions, making this a straightforward observational event with no ambiguity once the day concludes.

Historical May temperatures in the Paris region show considerable variability. Over the past two decades, 26 May highs at Le Bourget have ranged from approximately 16°C during cooler springs to 28°C during warmer years, with a median around 21–22°C. The 0% implied probability currently reflected in the crowd suggests either extreme confidence in a specific temperature band or insufficient liquidity across all outcome ranges. Comparable weather markets typically see probability mass distributed across multiple adjacent ranges rather than concentrated in a single outcome, indicating this market may lack sufficient trading activity to reflect genuine uncertainty.

Traders should monitor European weather forecasting updates released in the week preceding 26 May, particularly from Météo-France and the European Centre for Medium-Range Weather Forecasts (ECMWF). Spring weather patterns across northern Europe remain sensitive to Atlantic pressure systems and jet stream positioning, both of which shift substantially within a fortnight. Settlement occurs at 12:00 UTC on the resolution date, allowing final morning temperature readings to influence the outcome. The market's accessibility under UK and EU regulatory frameworks—including the German GlüStV's treatment of weather derivatives and CFTC reach over cross-border prediction market participation—remains unchanged regardless of temperature outcome.

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

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 Polymarket KYC UK?

Zero. Polymarket KYC UK 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, Polymarket KYC UK triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.