Highest temperature in Seoul on June 27?

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Market context

Seoul is currently under mostly cloudy skies with a northeasterly wind and 75% humidity, setting a cool start for 27 June 2026 where the temperature is expected to hover around 19°C before potentially climbing to 33°C by afternoon[3]. This immediate outlook contrasts sharply with the crowd-implied 0% probability for any extreme heat, as the day begins firmly in the mild early-summer range rather than the intense tropical heat typical of midsummer[2].

Historically, late June in Seoul marks the transition into the monsoon season, where daytime temperatures usually range between 19°C and 28°C (66°F to 82°F) with about seven rainy days, making extreme highs above 33°C statistically rare for this specific window[2][5]. While early June often feels like an extended spring, the latter half of the month sees rising humidity and a higher chance of rain, which typically suppresses peak temperatures rather than amplifying them, aligning with the market's current bearish sentiment on heat[7].

Traders should monitor the Korea Meteorological Administration’s short-range forecasts for any sudden shifts in wind patterns or cloud cover that could trigger rapid heating before the 12:00 UTC settlement window[9]. The primary catalyst remains the onset of the rainy season, which usually spans late June to mid-July and brings afternoon showers that cool the air, so a lack of precipitation in the next six hours would be the only significant deviation supporting a higher temperature outcome[2][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul on June 27? 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 Prediction Today — 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

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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.

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.

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.