Highest temperature in NYC on July 6?

Platform comparison

Market context

On 6 July 2026, New York City faces a critical heat benchmark as LaGuardia Airport is expected to record its highest daily temperature, with the market currently implying zero chance of exceeding the threshold. This event sits within a broader East Coast heatwave that has already pushed LaGuardia to 102°F on a recent Thursday, shattering the 1966 daily high of 101°F and setting a new midnight record of 94°F, the warmest ever for the city at that hour[1][3]. Historical precedents from July 2013 and the current 2026 forecast, which projects daily highs between 81°F and 99°F, suggest that while extreme peaks are possible, the 0% implied probability reflects a cautious consensus that the specific threshold remains unlikely to be breached under current atmospheric conditions[1][6].

Traders must monitor real-time updates from Wunderground and the National Weather Service, as the resolution depends entirely on the highest temperature recorded at any time on 6 July at LaGuardia[8][9]. The primary catalyst is the continuation of the current heatwave, with meteorologists noting that record-setting heat has lingered into the night, indicating sustained thermal energy that could drive daytime temperatures higher if cloud cover remains minimal[1]. Analysts diverge from the 0% market line, with some sportsbook equivalents suggesting a non-zero probability given the recent 104°F spike at LaGuardia, which surpassed the 1966 record and signals a volatile thermal environment capable of producing unexpected peaks[3]. This divergence highlights a meaningful gap between the crowd-implied certainty and the analyst consensus that extreme outliers remain plausible in this volatile weather cycle.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.