Highest temperature in London on June 16?

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Market context

London's weather on 16 June 2026 will be measured against historical June patterns for the capital, with the highest temperature recorded at City Airport serving as the settlement metric. The 0% crowd probability suggests traders are either awaiting clearer atmospheric data or treating this as a placeholder market ahead of the typical June forecast window opening. Current meteorological models won't carry meaningful predictive power until early June, when seasonal patterns become more discernible.

Historical June temperatures at London City Airport typically range between 18–24°C for daily highs, though the station has recorded peaks above 28°C during warmer years. The 2022 heatwave saw London exceed 40°C in July, but June itself rarely approaches such extremes; the median June high sits closer to 20–21°C. This baseline matters for calibrating expectations around which temperature bands become plausible as the date approaches.

Traders should monitor the Atlantic Oscillation index and North Atlantic sea surface temperatures through May and early June, as these drive whether high-pressure systems establish over the UK or Atlantic weather systems dominate. The UK Met Office's extended outlook, typically updated fortnightly, will provide the first substantive signals around late May. Any significant warming or cooling signals in the 10–14 day forecast window (early June) will likely shift market probabilities sharply, as traders gain concrete meteorological guidance rather than relying on climatological averages.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

Prediction Today 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.

What does it cost to trade on Prediction Today?

Zero. Prediction Today 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, Prediction Today 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.