Highest temperature in London on June 11?

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Market context

On 11 June 2026, the highest temperature recorded at London City Airport will fall into one of several defined ranges, with settlement determined by Wunderground's historical weather data for that specific station. The market currently shows 0% probability across all temperature brackets, reflecting either illiquidity or genuine uncertainty about which range will resolve. Traders are pricing conditional tokens on Polygon via USDC, where each bracket represents a discrete outcome—the settlement mechanism depends entirely on the single daily maximum reading from the designated weather station.

London's June temperatures typically range between 18°C and 24°C, though the city has recorded highs above 30°C during heatwaves. The record for June at London City Airport sits at 32.3°C, set in 2022 during an exceptional warm spell. Historical June data suggests most years cluster in the low-to-mid 20s, making extreme ranges less probable than moderate ones. The 0% pricing across all brackets suggests the market may lack sufficient liquidity or trader participation rather than reflecting genuine forecasting consensus.

The UK Met Office publishes seasonal outlooks and monthly forecasts that typically become more refined in late May 2026. Any significant weather pattern announcements—particularly regarding Atlantic blocking systems or continental air masses—could shift trader positioning. The settlement window closes at midday on 11 June, meaning real-time temperature readings that morning will be critical; traders should monitor Wunderground's live data feed as the day progresses, since the highest temperature often occurs in early afternoon hours.

Methodology

This page reviews Highest temperature in London on June 11? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Scam? — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Scam?, 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.

Is this market available outside the US?

Polymarket Scam? is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Scam? triggers a quick verification flow that finishes in minutes.