Highest temperature in Shenzhen on June 8?

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Market context

On 8 June 2026, Shenzhen's highest temperature will be recorded at Bao'an International Airport Station and resolved against historical weather data. The current crowd-implied probability of 0% suggests traders are pricing in either extreme confidence in a specific temperature band or minimal liquidity across all outcome ranges. This stands in sharp contrast to typical meteorological uncertainty for a single-day temperature forecast in a subtropical coastal city where daily highs routinely fluctuate by 3–5°C depending on cloud cover and wind patterns.

Shenzhen's June climate presents a useful historical baseline. Average highs in early June range from 28–31°C, with extreme records reaching 35°C on particularly hot days. The 0% reading across all temperature brackets is unusual given that even well-established weather models carry forecast error margins of ±2–3°C at a five-day horizon, let alone for a market settling nearly two years forward. Comparable prediction markets on fixed-date weather events typically show distributed probabilities reflecting genuine meteorological variance rather than consensus clustering.

Traders monitoring this contract should track seasonal climate patterns and any long-range forecasting updates as June 2026 approaches. Whilst no specific weather announcements drive near-term movement, the settlement mechanism's reliance on Wunderground's historical database for Bao'an Station means data availability and station operational status remain relevant dependencies. The current probability distribution suggests either thin order books or a technical issue in market pricing rather than genuine forecaster agreement on the outcome.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Best Prediction Markets UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

What does it cost to trade on Best Prediction Markets UK?

Zero. Best Prediction Markets UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.