Highest temperature in Shenzhen on August 2?

Platform comparison

Market context

Shenzhen’s highest temperature on 2 August will be read from the airport station, and the market is set on the day’s maximum, not the daily average. The crowd’s 0% YES implies the contract is being priced as effectively impossible, but the historical climate baseline does not support that reading: Shenzhen’s August highs are usually around 32°C to 32.2°C, with typical daily highs near 89–90°F and some sources showing 2 August averages around 91°F[1][2][5][9]. That makes the contract’s current implied probability notably more conservative than the seasonal norm, especially for a city where August is still in peak summer heat[4][18].

Comparable August cases show that Shenzhen can occasionally run hotter than its mean, with historical August highs reported up to the mid-30s Celsius and rare extremes above 40°C in broader city-level records[4][8]. Forecast-style sources for Shenzhen Town also point to August highs spanning roughly 84°F to 100°F, which is consistent with a distribution that includes mid-30s Celsius outcomes if sunshine and inland flow dominate[16]. On a cross-platform basis, sportsbook-style weather lines are not provided here, but mainstream climate references cluster around a very warm, humid August rather than an anomalously cool one, so the gap between 0% on the contract and the weather baseline is the key divergence to watch[9][13][14].

For traders, the main catalysts are the actual Shenzhen airport observations during the measurement window and any short-term forecast shift in cloud cover, rain bands or typhoon influence, because coastal southern China in August is exposed to both intense heat and abrupt rain-driven cooling[18]. The settlement source is Wunderground’s daily history page for Shenzhen Bao’an International Airport, so intraday spikes before noon UTC matter if they are captured in the station record[Market description]. With the contract settling at 12:00 UTC, any late-morning local conditions that lift the station maximum above adjacent range thresholds are the decisive factor, rather than the broader city forecast or evening temperatures.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shenzhen on August 2? 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 Kalshi vs Polymarket, 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

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.