Highest temperature in Hong Kong on June 26?

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Market context

The real-world event is the daily maximum temperature recorded by the Hong Kong Observatory on 26 June 2026, which will determine the settlement of a prediction market on temperature ranges. Historical data shows Hong Kong’s June average high sits around 31°C, with summer peaks typically between 28°C and 32°C[2]. The Hong Kong Observatory’s seasonal forecast for June–August 2026 predicts above-normal temperatures, reinforcing the market’s 99% probability that 31°C will be the outcome[1][3]. This aligns with past years where June highs consistently cluster near 31°C, making the current 0% YES probability for other ranges a logical reflection of climatic norms rather than an anomaly.

Traders should monitor the Hong Kong Observatory’s Daily Extract publication schedule, as the market cannot resolve until the “Absolute Daily Max (deg. C)” is finalized[1]. Recent weather updates confirm daily highs in June 2026 range from 86°F to 92°F (30°C–33°C), supporting the 31°C frontrunner[4]. Regulatory accessibility hinges on German GlüStV implications, which may restrict unlicensed betting platforms, and US CFTC reach, which could impose KYC requirements for larger trades. However, the “no-KYC up to $1,500” clause allows smaller participants to access this market without identity verification, enhancing inclusivity for casual traders while maintaining compliance with international standards. This specific market’s structure balances regulatory caution with practical accessibility, ensuring it remains viable for a broad audience.

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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'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 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.

Do I need to KYC for this market?

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