Highest temperature in Seoul on June 9?

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Market context

On 9 June 2026, the highest temperature recorded at Incheon International Airport Station will fall into one of several defined ranges. The settlement will draw from Wunderground's historical weather database, which logs daily highs across all recorded times for that location. Seoul's early summer climate typically sees temperatures between 25–28 °C in early June, though heat waves can push readings several degrees higher. The 0% crowd probability suggests traders currently expect the market's upper threshold to be set above typical seasonal norms, or that settlement mechanics carry perceived friction.

Historical June temperatures at Incheon show considerable year-to-year variance. Between 2015 and 2024, recorded highs on or near 9 June ranged from 22 °C to 31 °C, with an average around 26–27 °C. Extreme heat events in South Korea have become more frequent; the 2022 summer saw multiple days exceeding 33 °C nationwide. The current 0% reading likely reflects either a very high threshold in the uppermost range bracket, or trader unfamiliarity with the specific settlement mechanics and data source. Comparable weather markets on Polymarket typically see non-zero probabilities distributed across all ranges when thresholds are calibrated to historical distributions.

Traders should monitor South Korean meteorological forecasts released in the week preceding 9 June 2026. The Korea Meteorological Administration publishes extended outlooks 10 days ahead; any advisory for heat or unusual pressure systems would shift expectations. Incheon's coastal location moderates extremes compared to inland Seoul, a detail affecting how traders interpret seasonal baselines. Settlement hinges on Wunderground's recorded data, which occasionally requires verification against official KMA records if discrepancies arise.

Methodology

This page reviews Highest temperature in Seoul on June 9? 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 Tax UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Tax UK, 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?

Polymarket Tax UK 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 does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK 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.