Highest temperature in London on June 9?

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Market context

On 9 June 2026, the highest temperature recorded at London City Airport will fall into one of several defined ranges. The market currently shows 0% probability across all temperature bands, reflecting either minimal trading activity or a technical settlement lag. Polymarket prices this contract in USDC on Polygon, with conditional tokens issued for each temperature bracket; traders holding the winning range token at settlement will receive their proportional payout once Wunderground's historical data confirms the day's peak.

London's June temperatures historically cluster between 18°C and 24°C, with occasional excursions above 25°C during warm spells. The Met Office records show that early June typically sits below the summer peaks of July and August, though heat waves can occur. The 0% crowd probability suggests either that traders view this as a low-liquidity contract awaiting price discovery, or that the market has not yet attracted sufficient participation to establish meaningful odds across the temperature bands.

Traders monitoring this contract should track the Met Office's medium-range forecasts as June approaches, particularly any alerts for anomalous warmth driven by continental high pressure systems. The UK's weather patterns in early June 2026 will depend on Atlantic storm tracks and the North Atlantic Oscillation phase—factors typically visible in reliable forecasts only 10–14 days ahead. Settlement hinges entirely on Wunderground's historical data pull from London City Airport Station (EGLC), making data availability and station continuity the only operational dependencies once the day concludes.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Legit?, which mirrors the Polymarket order book directly.

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 Legit? 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.

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 Legit? 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.