Highest temperature in Hong Kong on June 4?

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Market context

On 4 June 2026, the Hong Kong Observatory will record a daily maximum temperature in Celsius, and this market settles on which range that reading falls into. The 0% crowd probability reflects the market's current inability to price an event six months distant with any meaningful conviction. On Polymarket, this contract trades as conditional tokens on Polygon, denominated in USDC, with settlement contingent on official Observatory data publication in their Daily Extract records.

Hong Kong's June climate sits at the threshold between late spring and early summer. Historical data shows daily maxima in early June typically range between 28°C and 32°C, though outliers occur. The 2015 heatwave pushed temperatures above 34°C in early June; conversely, cooler systems can suppress readings to 26–27°C. The Observatory's official measurements, taken at the King's Park station, form the binding resolution source, and these figures are published with one decimal precision, meaning ranges must account for fractional variation.

Traders should monitor seasonal forecasting models from late May onwards, particularly the Asian summer monsoon onset patterns and any tropical cyclone activity in the Western Pacific. The Observatory publishes monthly climate summaries and seasonal outlooks that typically become available four to six weeks before the target month. El Niño or La Niña conditions in early 2026 could shift baseline expectations; current oceanic indices should be tracked through meteorological bulletins. Settlement cannot occur until the Observatory publishes the Daily Extract for 4 June, which historically occurs within days of month-end, though delays occasionally extend timelines.

Methodology

This page reviews Highest temperature in Hong Kong on June 4? 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 Polymarket Scam? — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

On Polymarket Scam?, 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.

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 Polymarket Scam??

Zero. Polymarket Scam? 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, Polymarket Scam? triggers a quick verification flow that finishes in minutes.