Highest temperature in Shanghai on June 27?

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Market context

The real-world event hinges on the highest temperature recorded at Shanghai Pudong International Airport on 27 June 2026, measured in degrees Celsius and sourced from Wunderground. Historical data for June at this station shows daily highs typically ranging from 25°C to 30°C, with averages near 28°C, rarely dipping below 21°C or exceeding 30°C under normal conditions [1][6][8]. Given that the current crowd-implied probability for a specific outcome sits at 0% YES, traders should interpret this as a market betting against an extreme outlier—such as a temperature far outside the established 25–30°C band—rather than a forecast of typical summer heat.

Key catalysts to monitor include official weather advisories from Chinese meteorological services and flight disruption notices, as bad weather on 27 June has already been flagged for potential delays at Shanghai airports [5]. A sudden shift in monsoon patterns or an unseasonal heat dome could alter the expected range, though such events remain statistically uncommon in late June. Recent reports from AccuWeather confirm the 2026 forecast for Shanghai Pudong anticipates highs between 26°C and 30°C, reinforcing the baseline expectation [2]. Traders must watch for real-time updates from Wunderground, the designated resolution source, as any deviation from the norm would directly impact market settlement.

Regulatory accessibility for this market is shaped by overlapping frameworks: Germany’s GlüStV (Gaming State Treaty) imposes strict licensing for online prediction markets, while the US CFTC maintains reach over commodity-linked derivatives, including weather-based contracts. The “no-KYC up to $1,500” provision allows retail participants to trade without identity verification below this threshold, enhancing accessibility for small-scale traders in jurisdictions with lighter oversight. However, this does not exempt the platform from compliance with anti-money laundering rules or tax reporting obligations in regulated territories. Facts remain clear: participation is permitted where local laws allow, but legal responsibility rests with the individual user.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on June 27? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against 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

Is this market available outside the US?

PolyGram 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 PolyGram?

Zero. PolyGram 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.

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.