Highest temperature in Shanghai on June 20?

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Market context

Shanghai Pudong International Airport’s peak temperature on 20 June will be judged by the single highest reading logged at the station before the settlement cut-off, so the relevant question is whether the day produces a modestly warm result or a pronounced afternoon spike. June in Shanghai is normally hot, humid and increasingly convective, with typical daily highs at Pudong rising from about 77°F to 83°F through the month and rarely exceeding 92°F, which keeps the likely outcomes clustered in the high-20s to low-30s Celsius range.[1][7]

A 0% yes probability is best read as a pricing artefact rather than a weather statement, because comparable June temperature markets on Polymarket have already resolved tightly around specific Celsius bands, and historical June maxima at Pudong commonly sit near 29–30°C.[2] In practical terms, a result materially below that range would usually require cloud, rain or a cooler maritime flow, while a result above it depends on clear skies and strong solar heating before the midday settlement window closes. That matters for accessibility as well: under Germany’s GlüStV framework, availability can be constrained by gambling-classification and local compliance treatment, while US CFTC reach is relevant because event contracts can draw regulatory scrutiny if offered to US persons. For this specific market, “no-KYC up to $1,500” means a lower-friction entry point for small positions, but it does not remove platform limits, identity checks above the threshold, or any jurisdictional restrictions.

The main catalysts are weather-model updates, precipitation timing, and any airport-specific forecast revisions from the major providers that traders typically monitor through the morning and early afternoon. Shanghai’s June climate is rain-prone, with rainfall and humidity often suppressing the daily maximum if showers arrive early, whereas a delayed rain band can still leave room for a warmer high before noon UTC. The practical watchlist is simple: cloud cover, rain onset, wind shift, and whether the airport station reaches its peak before the settlement window ends.

Sources: 1 · 2 · 3 · 4 · 5

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

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?

Polymarket KYC UK 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.

What does it cost to trade on Polymarket KYC UK?

Zero. Polymarket KYC 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 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.