Highest temperature in Shanghai on June 27?

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Market context

On 27 June 2026, the Shanghai Pudong International Airport Station will record its peak temperature for the day, a metric that determines the outcome of this prediction market. The current crowd-implied probability sits at 0% for the YES outcome, suggesting the consensus believes the temperature will not reach the specified threshold. Historically, June at this location sees daily highs climbing from 77°F to 83°F, rarely dipping below 69°F or exceeding the upper limits of the warm season, with average solar energy gradually decreasing as the month progresses [1]. The 2025 historical data confirms these patterns, where temperatures remained within a predictable band, making extreme outliers statistically improbable without specific catalysts [7].

Traders should monitor the immediate forecast for 27 June, which projects daily highs ranging between 80° and 86°, with overnight lows between 69° and 77° [2]. The primary catalyst is the presence or absence of heavy cloud cover or rainfall, as cloudy days typically see highs hovering around 25–30°C (77–86°F), while clear skies could push temperatures higher [5]. The consensus is heavily positioned against the YES outcome, viewing the 0% probability as a fair reflection of typical June variability. However, value might sit on the contrarian angle if an unexpected heatwave or lack of precipitation occurs, as the 2026 forecast already hints at temperatures nearing the upper threshold of the range [2]. The wind speed remains constant at roughly 11.3 mph, offering little cooling relief if solar radiation intensifies [1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shanghai on June 27? 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 does it cost to trade on Who Will Win 2026?

Zero. Who Will Win 2026 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win 2026 triggers a quick verification flow that finishes in minutes.