Highest temperature in Guangzhou on July 4?

Platform comparison

Market context

On 4 July 2026, the highest temperature recorded at Guangzhou Baiyun International Airport will determine the outcome of a prediction market where the crowd currently assigns zero probability to any temperature hitting 31°C. This implies the market expects conditions far above that threshold, consistent with Guangzhou’s peak summer climatology. Historical data confirms July is the hottest month, with average daily highs ranging between 33°C and 35°C, and extremes occasionally reaching 39°C. Even in cooler years, daily highs rarely dip below 33°C, making 31°C an implausible ceiling for this date.

Traders should monitor real-time weather updates from Wunderground, the official resolution source, alongside broader climate indicators such as the China Meteorological Administration’s seasonal forecasts. Recent reports note Guangzhou experienced its longest summer since 1961, with average temperatures climbing to 23.3°C and summer days accumulating to record levels. While no political debates or campaign-finance disclosures directly influence temperature, the market leans on the climatic catalyst of sustained heatwaves, reinforced by national records of China’s hottest month in recent history. The zero probability on 31°C reflects confidence in these entrenched thermal patterns, not speculative political noise.

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Methodology

This page tracks Highest temperature in Guangzhou on July 4? 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

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.

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.

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.

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.