Highest temperature in Hong Kong on June 17?

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Market context

Hong Kong's June weather is entering its pre-monsoon phase, with the city typically experiencing warm, humid conditions as the southwest monsoon strengthens. The Hong Kong Observatory's daily maximum temperature recordings for mid-June historically cluster in the 28–32°C range, though occasional heat spikes push readings toward 33–34°C during particularly intense heat events. The 0% crowd probability suggests traders are either uncertain about which temperature band will resolve, or the market has insufficient liquidity to establish meaningful odds across available ranges.

Historical June data from the Observatory shows considerable year-to-year variation. The absolute daily maximum for any given 17 June has ranged from around 27°C in cooler years to 33°C during warmer episodes, with most occurrences settling between 29–31°C. This spread reflects the transitional nature of early-to-mid June, when the pre-monsoon trough can either intensify heat or introduce cloud cover and rain that moderates temperatures. Comparable dates in recent years provide useful anchors: mid-June 2023 saw maxima near 31°C, whilst 2022 recorded similar levels with occasional dips below 30°C.

Traders should monitor the Observatory's extended forecasts as June 2026 approaches, particularly any signals about monsoon onset timing and upper-level atmospheric patterns. The settlement window closes at 12:00 UTC on 17 June, though the Observatory typically publishes daily climate data within 24 hours of observation. Any significant weather systems—tropical cyclones, unusual high-pressure systems, or delayed monsoon progression—would shift temperature expectations materially from the historical median.

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

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 Prediction Today, 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?

Prediction Today 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'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.

Do I need to KYC for this market?

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