Highest temperature in London on June 2?

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Market context

The settlement of this market depends on the maximum temperature recorded at London City Airport on 2 June 2026. The Met Office's historical data shows that early June temperatures in London typically range between 18–22°C, with occasional warm spells pushing into the mid-20s. The airport station, located in the Isle of Dogs, sits within central London's urban heat island, which can elevate readings by 1–2°C compared to surrounding areas. June marks the transition toward summer, with increasing daylight hours and higher solar intensity, though the UK's maritime climate means significant day-to-day variability remains common.

Historical precedent offers limited direct comparison for this specific date and location. June 2019 saw a heatwave across southern England, with London recording 32°C, but such extremes remain statistically infrequent. More typical June maxima cluster around 20–23°C. The 0% crowd probability suggests traders are either uncertain about the resolution mechanics, sceptical of extreme heat materialising, or focused on other temperature bands within the market's range structure.

Traders should monitor long-range weather forecasts from mid-May onwards, as these become increasingly reliable within two weeks of the settlement date. The UK's Met Office and European Centre for Medium-Range Weather Forecasts (ECMWF) both publish extended outlooks. Atmospheric pressure patterns, jet stream positioning, and any developing high-pressure systems over the continent will be key indicators of whether June 2 experiences unseasonably warm conditions or remains within typical early-summer ranges.

Methodology

This page reviews Highest temperature in London on June 2? 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

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 Sport 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.

Is this market available outside the US?

Sport Prediction 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.

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, Sport 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.