Highest temperature in Shanghai on June 22?

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Market context

Shanghai Pudong International Airport needs a properly hot afternoon to beat the market’s 0% implied chance of a high-temperature band outcome that is above the usual June range, and the **favourite** is clearly the cooler side of the book. June at Pudong typically sees daily highs climb from about 77°F to 83°F, with readings rarely below 69°F or above 92°F, while the airport’s hot season is already under way by late June.[1][3] That makes the consensus case a middling-to-warm day rather than a truly extreme spike, so the value is usually on the **underdog** only if forecasters start flagging an unusually strong heat burst.

For handicapper’s purposes, the historical frame is simple: Shanghai can get hot in summer, but the airport site is not a guaranteed furnace every afternoon. June weather there often mixes warmth with wind and changing cloud cover, which caps runaway highs even in a season when 30°C-plus days are common.[1][5] Against a 0% crowd price, the contrarian angle is that any late-breaking forecast for clear skies, weak maritime influence, and sustained sunshine would make the upper ranges look cheap; absent that, the market is effectively betting on a non-heat outcome.

The main catalysts to watch are the local forecast for Shanghai Pudong itself, the timing of afternoon convection, and whether rain or thunderstorms arrive early enough to suppress the day’s peak before the settlement window closes at noon UTC.[6][8] AccuWeather’s current airport forecast points to an afternoon thunderstorm risk and a very damp profile, which would lean against an extreme high; BBC Weather for Shanghai also shows humid, moderate conditions rather than a clean heat setup.[2][6] If that wet, unstable pattern holds into the midday hours, the consensus remains with the lower-temperature bands, while the only meaningful value sits in a contrarian wager on a sunnier-than-expected break in the cloud.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shanghai on June 22? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Is this market available outside the US?

Who Will Win 2026 is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

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.