Highest temperature in London on June 14?

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Market context

The settlement of this market depends on the highest temperature recorded at London City Airport on 14 June 2026. The Met Office's historical data shows that mid-June temperatures in London typically range between 18°C and 23°C, though extremes have occasionally pushed toward 28–30°C during heat waves. The current 0% probability assigned to any single range suggests traders are awaiting clearer seasonal forecasts or that the market has insufficient liquidity to establish meaningful odds across the available temperature bands.

Historical precedent indicates that June heat waves in London remain relatively uncommon but not unprecedented. The summer of 2022 saw temperatures exceed 40°C across parts of southern England, though London City Airport itself recorded lower peaks due to its proximity to the Thames and urban cooling effects. June specifically has produced temperatures above 25°C in roughly one year per decade over the past fifty years, making higher ranges plausible but not dominant outcomes.

Traders should monitor long-range weather models released in late May 2026, which typically offer the most reliable guidance for specific dates two to three weeks ahead. The North Atlantic Oscillation and jet stream positioning in early June will be critical indicators of whether continental warm air reaches the UK. Any significant weather warnings or heat-health alerts issued by the UK Health Security Agency in the days preceding 14 June would signal elevated temperature expectations and warrant reassessment of probability distributions across the available ranges.

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 Sport Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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