Highest temperature in London on June 14?

Platform comparison

Active sub-markets

Market context

On 14 June 2026, the highest temperature recorded at London City Airport will fall into one of several defined ranges. The settlement will draw from Wunderground's historical weather database for that specific station and date, with the resolution window closing at noon UTC. The current crowd probability of 0% suggests traders are either awaiting further definition of the temperature bands or treating this as a placeholder market pending full specification.

London's June temperatures typically range between 18–24°C, though extremes have occasionally pushed toward 30°C during heatwaves. Historical precedent matters here: the UK experienced a June heatwave in 2022 with London reaching 32°C, and again in 2023 with temperatures near 28°C. These outliers inform how traders should calibrate expectations for tail-risk scenarios. The current zero probability likely reflects uncertainty about the exact resolution bands rather than dismissal of the underlying event's measurability.

From a regulatory standpoint, this market's accessibility depends on jurisdiction and deposit thresholds. Under German GlüStV rules, prediction markets operating without a licence face restrictions on marketing to German residents, though cross-border trading by individuals remains largely unpoliced. US CFTC oversight applies if the platform is US-domiciled or actively solicits US traders; weather derivatives typically fall outside CFTC jurisdiction when settled on objective data. The "no-KYC up to $1,500" threshold common in decentralised prediction markets means traders can participate without identity verification below that stake level, though this varies by platform and jurisdiction. For this specific market, such accessibility provisions lower barriers to entry for casual weather speculators across multiple territories.

Methodology

This page reviews Highest temperature in London on June 14? 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 Tax UK — 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

Is this market available outside the US?

Polymarket Tax UK 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.

What does it cost to trade on Polymarket Tax UK?

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

Do I need to KYC for this market?

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