Highest temperature in Guangzhou on August 4?

Platform comparison

Market context

Guangzhou Baiyun Airport’s hottest reading on 4 August will almost certainly land in the low- to mid-30s Celsius, with the market’s 0% YES pricing making the **over** side the clear favourite in any normal summer pattern. August in Guangzhou is typically hot, humid and rain-prone, and several forecasters put early-August highs around 32–35.5°C, with one day-specific forecast showing 33°C and heavy rain for 4 August.[2][3][9][13][15]

That historical frame matters because the airport station is an urban low-altitude site where afternoon highs can still spike even on showery days, but cloud cover and thunderstorms can cap the day’s maximum if they arrive early. In other words, the consensus sits firmly with a warm-to-hot outcome rather than an extreme heat event, which makes the current 0% YES line look like a longshot price rather than a realistic read of the likely temperature band.[1][7][12][16]

The main catalysts are the timing and intensity of rain bands, plus how long sunshine survives before convective cloud builds later in the day. Recent live forecasts for Guangzhou/Baiyun showed showers and temperatures around 28–32°C, with humidity near 89% and rain chances elevated, which points to a sticky but not necessarily record-breaking afternoon.[7][12][17] For traders, the contrarian angle is a sharper-than-expected rain spell that holds the day’s high down; the value case remains the more conventional one, with the market leaning underdog on the odds but favourite on the weather pattern.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Guangzhou on August 4? 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.