Highest temperature in London on June 11?

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Market context

The highest temperature recorded at London City Airport on 11 June 2026 will determine which temperature band resolves this market. The settlement window closes at midday on that date, capturing the peak daily temperature as reported by Weather Underground's historical records for the station.

London's June temperatures typically range between 18°C and 24°C, with occasional peaks above 25°C during warm spells. Historical data from the Met Office shows that temperatures exceeding 28°C in early June are uncommon but not unprecedented; the city recorded 29.2°C on 11 June 1976 during an exceptional heatwave. More recent June patterns suggest a median high around 21–22°C. The current 0% probability on higher temperature bands reflects baseline expectations for a typical early-summer day rather than any specific meteorological forecast.

Traders should monitor the UK Met Office and BBC Weather forecasts as the settlement date approaches, particularly any warnings of heat anomalies or Atlantic weather systems that might drive temperatures upward. Seasonal atmospheric patterns—including jet stream positioning and North Atlantic sea-surface temperatures—typically become clearer in the weeks immediately preceding mid-June. The resolution depends entirely on actual recorded conditions at the specific London City Airport station, not broader London readings or alternative weather stations, making the precise location critical for settlement accuracy.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in London on June 11? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Where can I trade this market with the lowest fees?

On Trump Prediction, 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 does it cost to trade on Trump Prediction?

Zero. Trump Prediction 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, Trump Prediction 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.