Highest temperature in NYC on July 21?

Platform comparison

Market context

On 21 July 2026, the highest temperature recorded at LaGuardia Airport Station will fall into one of several defined ranges. Settlement depends on data from Weather Underground's historical records for that specific date and location, measured in Fahrenheit. The 0% crowd probability suggests traders currently see no conviction in any particular outcome band, or the market may lack sufficient liquidity to establish meaningful odds.

New York City's July temperatures historically cluster between 78–88°F, with extreme heat events pushing into the low 90s. The National Weather Service records show that LaGuardia has experienced only three days above 95°F in July since 1940, making such outcomes statistically rare but not unprecedented. The current flat probability distribution reflects genuine uncertainty rather than consensus that extreme heat is unlikely; rather, the market has not yet attracted sufficient trader participation to price in seasonal norms or recent climate trends.

Traders should monitor the National Weather Service's extended forecast for late July 2026 as the settlement date approaches, particularly any heat advisories or excessive heat watches issued in the preceding week. Atlantic hurricane activity and upper-level atmospheric patterns in mid-July will influence whether tropical moisture or dry continental air dominates the Northeast. The regulatory framework for this market varies by jurisdiction: under German GlüStV rules, prediction markets require licensing; US CFTC oversight applies to derivatives-like contracts; and many platforms offer no-KYC access up to $1,500 notional exposure, which may affect how accessible this weather contract remains to retail traders depending on their location and platform choice.

Methodology

This overview of Highest temperature in NYC on July 21? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Do I need to KYC for Polymarket Tax UK?

Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.

Can I trade anonymously?

Pseudonymously, yes — up to the KYC threshold. Polymarket Tax UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.