Highest temperature in Los Angeles on July 9?

Platform comparison

Market context

The underlying event is the peak temperature recorded at Los Angeles International Airport on 9 July 2026, a date when the city typically experiences its most intense summer heat. Historical patterns and recent forecasts suggest daily highs will likely range between 79°F and 90°F, with an average July high of 85°F[3]. This context starkly contradicts the current crowd-implied probability of 0% for any outcome above 75°F, as recent daily maxima have already hovered near 75°F, and 80°F-plus outcomes remain plausible[1].

Cross-platform odds reveal a meaningful divergence: while the prediction market implies negligible chance of higher temperatures, Polymarket frontrunners assign 56% probability to 74–75°F and 36% to 72–73°F[1], whereas Lines.com identifies 76–77°F as the most likely daily high[7]. Analyst consensus from AccuWeather supports higher temperatures, forecasting mid-80s to 90s for LA County, with Coachella Valley exceeding 110°F[9]. Traders should monitor the National Weather Service’s heat advisory schedules and extreme heat warnings, as recent Southern California heatwaves have shattered record highs[6]. The settlement source, Wunderground, will capture the official peak, making real-time weather updates critical for assessing odds shifts.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Los Angeles on July 9? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets UK, which mirrors the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK 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.