Highest temperature in London on July 14?

Platform comparison

Market context

The London City Airport weather station will record a daily high on 14 July 2026. The crowd has assigned zero probability to any outcome, suggesting either extreme confidence in a particular temperature band or insufficient liquidity to establish meaningful pricing across the range options.

Mid-July temperatures at London City Airport typically peak between 20–24°C, with historical records showing occasional excursions into the 25–28°C bracket during warm spells. The UK Met Office's 30-year climate normals place the mean maximum for mid-July at approximately 23°C. Extreme heat days exceeding 30°C occur rarely in London's recorded history—the station has seen such readings in only a handful of years since systematic records began. The 0% crowd probability suggests traders expect the outcome to fall within a narrow, consensus band rather than distribute risk across multiple temperature ranges.

The UK Met Office issues extended forecasts from mid-June onwards, with increasing confidence from early July. Any significant heat warnings or anomalous pressure patterns developing in the weeks before 14 July would shift expectations. Recent summers have shown variable patterns; the Met Office's seasonal outlooks for summer 2026 will provide the first formal guidance on whether July favours above or below-normal temperatures. Traders should monitor these forecasts alongside any Atlantic weather systems that might drive unseasonable warmth or cool maritime air into the region during the settlement window.

Methodology

This page reviews Highest temperature in London on July 14? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors 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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.