Highest temperature in NYC on July 4?

Platform comparison

Market context

On 4 July 2026, New York City faces a critical heat test as the LaGuardia Airport Station records its daily peak temperature, with the current market implying a near-zero chance of exceeding the 98–99°F bracket. This 0% probability aligns with historical precedents where July 4 extremes rarely breach 100°F, despite the all-time record of 107°F set on 3 July 1966 at the same station[4]. Recent forecasts for July 2026 show daily highs ranging from 81°F to 99°F, suggesting the atmosphere is primed for warmth but not for record-breaking intensity[2]. The thin volume and tight bracket in the market further indicate that traders view the 98–99°F range as a plausible ceiling, yet the current pricing reflects a cautious stance against higher outcomes[1].

Traders should monitor live National Weather Service revisions and the heat index trends, as recent reports note a heat index of 101°F at Chicago O'Hare on Monday, signalling broader regional heat pressure that could spill into New York[5]. The National Weather Service has already recorded 91°F at LaGuardia by midday on 4 July, with temperatures stabilising around this mark as the afternoon progresses[3]. Key dependencies include overnight lows, which forecasters predict between 68°F and 83°F, and the potential for cloud cover to moderate peak temperatures[2]. A beat-reporter source from The New York Times highlights that the heat wave forecast remains volatile, with revisions likely as the day unfolds, making real-time data essential for assessing the true probability of exceeding the current bracket[5].

Sources: 1 · 2 · 3 · 4 · 5

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.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

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.

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.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.