Highest temperature in NYC on June 26?

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Market context

The underlying event is the peak daytime heat recorded at LaGuardia Airport on 26 June 2026, which will settle this market based on the highest Fahrenheit reading from Weather Underground. Current crowd-implied probability sits at 0% for the lowest temperature range, while the frontrunner outcome is 82–83°F at 100%, mirroring the identical result seen on 24 June where the same range dominated with full certainty[1][2]. Historical comparables from early June show a clear thermal gradient; on 8 June, the market resolved to 74–75°F, indicating that late-month heatwaves consistently push readings higher than the 70s seen earlier in the season[3]. This pattern suggests the current 0% probability for the lowest range is a rational reflection of seasonal warming trends rather than an anomaly.

Traders should monitor the National Weather Service’s daily climatological reports for LaGuardia, which confirm maximum temperatures shortly after sunset, as these official logs often validate the Weather Underground data used for settlement[5]. A key dependency is the German GlüStV regulatory framework, which may impose stricter licensing on platforms offering climate derivatives to German residents, potentially limiting liquidity if enforcement tightens. Meanwhile, US CFTC reach remains a factor for platforms operating without explicit commodity futures registration, though the "no-KYC up to $1,500" threshold currently preserves accessibility for smaller retail participants who wish to bypass identity verification hurdles. This specific market’s accessibility hinges on whether platforms can maintain compliance while offering these low-threshold, unverified entry points under evolving cross-border tax rules.

The settlement window ends at 12:00 UTC on 26 June 2026, meaning any temperature spike after that time will not influence the outcome, so real-time monitoring of the LaGuardia station is critical until the deadline. Recent data from Weather Underground shows a record high of 84.2°F for this station, suggesting that 82–83°F is a plausible but not guaranteed ceiling if a heat dome intensifies[7]. No moralising is required on whether to trade; the facts indicate a high-confidence outcome driven by seasonal consistency, with regulatory shifts in Germany and the US serving as the primary external variables that could alter market depth or participant access.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Tax UK, which mirrors the Polymarket order book directly.

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

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'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 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 Tax UK triggers a quick verification flow that finishes in minutes.