Highest temperature in London on July 6?

Platform comparison

Market context

London is set for a significant burst of summer heat on 6 July 2026, with temperatures climbing into heatwave territory across the city as dry conditions dominate and sunshine persists through the afternoon[4]. The Met Office forecasts a maximum temperature of 32°C for London City Airport on this date, aligning with the crowd-implied probability that any outcome below 31°C is effectively impossible[9].

Historical July data for London shows average highs of 22°C, but recent years have frequently breached 30°C during summer spikes, with 31–33°C now common in heatwave scenarios[6]. The current 0% probability for lower ranges reflects this shift, as the market leans heavily on the 32°C outcome, which holds 38% of the vote, followed closely by 33°C at 29%[2].

Traders should monitor the Met Office’s hourly updates for 6 July and Wunderground’s real-time station data for EGLC, as isolated thunderstorms could briefly disrupt the heat build-up but are unlikely to suppress the peak temperature[4][9]. The primary catalyst is the confirmed heatwave forecast extending through 5–7 July, with no scheduled political debates or campaign disclosures affecting this weather event, making meteorological data the sole resolution driver[4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in London on July 6? 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 Trump Prediction 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

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

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 Trump Prediction route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

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.