Highest temperature in NYC on July 3?

Platform comparison

Market context

The real-world event is New York City’s peak heat on 3 July 2026, with LaGuardia Airport expected to record temperatures well above average amid a hot, humid, and unstable weather pattern that includes rising thunderstorm chances and warm nights offering little relief[3]. Historical precedent shows triple-digit temperatures are rare: NYC hit 100°F on 2 July 2026 for the first time since 2012, marking a 13-year gap without triple-digit highs, yet forecasts for 3 July suggest highs could reach the low to mid-90s, with some spots feeling hotter due to humidity[4]. The current 0% crowd-implied probability for the 100–101°F band reflects this scarcity, even though the 100–101°F outcome remains the market leader at 33.5% in a fragmented ten-way split where certainty is scarce[1].

Traders should monitor Wunderground’s official daily high for LaGuardia Airport, as well as evolving forecasts for heat, humidity, and thunderstorms that could suppress peak temperatures or push them higher[3]. Key catalysts include any official heat alerts or record-high declarations from weather agencies, alongside scheduled climate briefings or campaign-finance disclosures that might influence public attention on extreme weather events[5]. The market is leaning on the immediate weather forecast as its primary catalyst, with AccuWeather projecting daily highs between 77°F and 100°F for July 2026, making the 100–101°F band plausible but not certain[2]. No moralising is offered on whether to trade; the facts stand alone.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in NYC on July 3? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.