Highest temperature in NYC on June 22?

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Market context

The underlying event is the highest temperature recorded at LaGuardia Airport on 22 June 2026, which will settle via USDC on-chain mechanics with a resolution source from Wunderground. Historical climate normals for LaGuardia show a maximum of 98°F in 2012, while recent June 2026 forecasts indicate daily highs between 75°F and 88°F, with an average high near 82°F[5][6]. Current Polymarket data assigns a 97% probability to the 72–73°F range for this date, suggesting the market expects a notably cooler day than the seasonal average, despite the 0% crowd-implied probability for a "YES" outcome on extreme heat[1].

Traders should monitor the National Weather Service climatological reports for LaGuardia, which update daily and may reveal deviations from the forecasted 75–88°F range[5]. Any sudden shifts in funding rates or whale flows on BTC/ETH could signal macro-driven risk aversion that impacts liquidity in climate-linked prediction contracts, particularly as settlement approaches the 2026-06-22 deadline. Recent NWS point forecasts for nearby regions, such as Los Angeles showing a 69°F high, underscore the volatility in temperature predictions during this period, making real-time Wunderground data critical for validating the 72–73°F frontrunner[4]. Exchange spot prices and funding rates remain key indicators of capital allocation into these weather-based derivatives.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Where can I trade this market with the lowest fees?

On BTC Prediction, 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?

BTC Prediction 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, BTC Prediction 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.