Highest temperature in Seoul on June 17?

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Market context

The market currently prices the highest temperature in Seoul on 17 June 2026 at 0% across all available ranges, reflecting the substantial uncertainty inherent in forecasting weather nine months ahead. Settlement will depend on the maximum temperature recorded at Incheon International Airport Station, with traders required to select from discrete Celsius bands. The conditional token structure on Polygon means positions in non-resolving ranges expire worthless, creating a zero-sum dynamic where early pricing reflects only the most confident bets.

Historical June temperatures in Seoul provide the baseline for calibrating expectations. The city's average high in mid-June sits around 26–27°C, though the range spans from lows near 20°C to extremes exceeding 32°C. The 2018 heatwave pushed Seoul to 33°C in late June, whilst cooler years have seen highs stall in the low 20s. Incheon Airport, situated on the coast, typically runs 1–2°C cooler than central Seoul due to maritime influence, a factor traders should account for when assessing which temperature bands hold genuine probability mass.

The primary catalyst for June 2026 temperatures will be the strength and positioning of the North Pacific high-pressure system and any tropical systems tracking toward the Korean peninsula. Seasonal forecasting models from meteorological agencies will become more reliable from March onwards, though current long-range outlooks carry wide confidence intervals. Any significant El Niño or La Niña development over the coming months could shift regional temperature patterns, making early 2026 climate indices worth monitoring for traders seeking informational edges before the settlement window opens.

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 Polymarket Legit?, 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 Legit? 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 does it cost to trade on Polymarket Legit??

Zero. Polymarket Legit? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? 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.