Highest temperature in Shanghai on May 30?

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Market context

Shanghai's weather on 30 May 2026 will be measured against historical temperature records for that date at Pudong International Airport, the city's primary meteorological observation point. Late May sits within Shanghai's late spring period, typically characterised by warming trends ahead of the summer monsoon season. The settlement mechanism relies on Wunderground's historical weather database, which aggregates official station data from the airport's continuous monitoring.

Shanghai's May temperatures have shown consistent patterns across decades of records. The city's average high in late May ranges between 28–30°C, with extreme highs occasionally reaching into the mid-30s during heat waves. The 0% crowd probability suggests traders are pricing in either exceptionally cool conditions or uncertainty about the specific temperature thresholds offered in the market's resolution brackets. Historical May extremes at Pudong have occasionally exceeded 35°C during anomalous warm spells, though such events remain relatively infrequent.

Traders monitoring this market should track seasonal weather pattern forecasts released in April and early May 2026, particularly any signals of subtropical high-pressure systems moving into eastern China. The East Asian summer monsoon's timing and intensity directly influences Shanghai's late-May temperatures; early monsoon onset typically brings cooler, wetter conditions, whilst delayed onset allows stronger solar heating. Real-time forecasts from China's meteorological authority, released weekly in the month preceding settlement, will provide the most actionable data for reassessing probability distributions as the date approaches.

Methodology

This page reviews Highest temperature in Shanghai on May 30? 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 Sport Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Sport Prediction, 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.

Is this market available outside the US?

Sport Prediction 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.

What does it cost to trade on Sport Prediction?

Zero. Sport Prediction 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, Sport Prediction triggers a quick verification flow that finishes in minutes.