Highest temperature in Guangzhou on August 1?

Platform comparison

Market context

Guangzhou’s airport temperature on 1 August is a straight weather outcome, but the market is behaving like a near-certainty against the top band because the current crowd price implies virtually no chance of an extreme daytime high. That fits the climatology: August in Guangzhou is typically hot and humid, with average highs around 33°C and many guides putting the month’s usual daytime range around 32–33°C, while the hottest days can run higher into the mid-30s Celsius.[1][4][17][20]

The historical frame for reading a 0% YES price is that the result depends on whether the airport station prints an unusually strong afternoon maximum, not on the monthly average. Comparable August climate data for Guangzhou show regular highs near 33°C, but also individual August days in the mid-30s, including 35°C–36°C readings in published weather histories and guides.[4][17][20] That means the market is not pricing an impossible event; it is pricing a specific threshold as unlikely within the settlement window, especially if cloud cover, rain, or a southerly surge suppresses the day’s peak.[12][16][18]

The main catalyst to watch is the official hourly progression into the afternoon, because the settlement source is the Guangzhou Baiyun International Airport Station on Wunderground, not a citywide average.[1][19] Traders should focus on the day’s forecast highs and whether midday convection develops, since recent monthly outlooks for Guangzhou show August highs commonly in the upper 80s to low 90s Fahrenheit, with frequent rain and humidity keeping temperature spikes brief.[10][16][17] If the forecast cluster drifts up towards the top end of that range by late morning, the market should reprice quickly; if showers arrive early, the path back to the highest range narrows further.[10][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Guangzhou on August 1? 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

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

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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.

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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.

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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.

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