Highest temperature in Hong Kong on June 26?

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Market context

Hong Kong is currently experiencing a period of intense heat with urban temperatures forecast to reach 35°C on Friday, driven by a trough of low pressure and squally thunderstorms. The Hong Kong Observatory has issued warnings for extreme heat, noting that urban areas could hit 35°C while outlying regions may climb to 36–37°C, creating a high-risk environment for record-breaking temperatures on 26 June 2026.

Historical data and comparable cases frame the current 0% YES probability as a significant outlier, given that June in Hong Kong typically sees average highs between 28°C and 32°C, with July and August being the hottest months averaging 32°C. Recent forecasts for June 2026 indicate daily highs ranging from 85°F to 92°F (approximately 29°C to 33°C), and the seasonal forecast explicitly predicts above-normal temperatures for June through August, suggesting that a 0% probability contradicts the established climatic trend of above-average heat.

Traders should monitor the Hong Kong Observatory’s upcoming "Daily Extract" publication, which will finalize the "Absolute Daily Max" data once the settlement window closes, alongside real-time weather bulletins updated at 03:50 HKT. The market is leaning heavily on the immediate catalyst of the current extreme heat warning and the seasonal forecast’s confirmation of above-normal temperatures, with the primary dependency being the official data release from the Observatory to confirm whether the 35°C forecast materialises as the daily maximum.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Hong Kong on June 26? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Trump Prediction routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

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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.

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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.