Highest temperature in NYC on July 4?

Platform comparison

Market context

New York City is experiencing unprecedented heat, with LaGuardia Airport recording a historic 94°F at midnight and a daytime peak of 104°F, shattering the old record of 101°F. This extreme thermal event, hotter than Phoenix, suggests that the current crowd-implied probability of 0% for high temperatures on 4 July 2026 is likely mispriced given the immediate atmospheric momentum.

Historical data frames this anomaly within a pattern of escalating summer heat; the all-time record for LaGuardia remains 107°F from July 1966, yet recent years show a consistent climb toward that threshold. The fact that midnight temperatures have reached 94°F indicates minimal overnight relief, a critical factor that often drives daytime highs into the upper 90s or beyond 100°F in subsequent days.

Traders should monitor official Wunderground updates for LaGuardia and any forecast adjustments from AccuWeather, which currently projects daily highs between 81°F and 99°F for July 2026. Key catalysts include the persistence of this heat dome and potential announcements regarding regional cooling interventions, as the lack of overnight relief observed today could directly influence the settlement temperature range for the upcoming July 4 date.

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Methodology

Sports-specific comparison page for Highest temperature in NYC on July 4?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.