Highest temperature in London on July 14?

Platform comparison

Market context

The highest temperature recorded at London City Airport on 14 July 2026 will determine which Celsius range resolves this market. London's summer temperatures typically peak in the afternoon, with July averages ranging from 20–24°C, though heat waves can push readings considerably higher. The settlement relies on Wunderground's historical weather database for the London City Airport station, which provides granular daily records accessible through their archive tool.

London has experienced notable heat events in recent decades that contextualise the probability distribution. The record temperature for the capital stands at 40.3°C, set in July 2022 during an exceptional heat wave. More typical July highs cluster between 23–26°C, with readings above 30°C occurring roughly once every few years. The 0% crowd probability suggests traders are currently pricing in no expectation of extreme heat on that specific date, reflecting baseline seasonal patterns rather than any forecast anomaly.

Traders monitoring this market should track Met Office seasonal outlooks released in the months preceding July 2026, which typically flag elevated temperature risks three to four weeks ahead. European weather pattern forecasts—particularly the position of high-pressure systems over the Atlantic and continent—become increasingly reliable from early July onwards. Any official heat-health alerts issued by the UK Health Security Agency would signal elevated probabilities for the higher temperature ranges, though such warnings typically emerge only days before an event materialises.

Methodology

This page tracks Highest temperature in London on July 14? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.