Highest temperature in Los Angeles on July 12?

Platform comparison

Market context

Los Angeles International Airport typically experiences July highs near 73°F, rarely exceeding 79°F, setting a narrow baseline for the 12 July 2026 settlement [1]. Historical data shows daily highs in this period seldom fall below 69°F, with the 74–75°F and 76–77°F ranges representing the most probable outcomes based on long-term averages [1].

Current crowd-implied probability for any specific outcome sits at 0% YES for the market’s binary framing, yet Polymarket data reveals a 67% implied chance for the 76–77°F bracket, with 74–75°F at 25% [2]. This divergence highlights thin liquidity and a lack of consensus across platforms, as sportsbook lines for similar weather contracts often cluster tighter around the 74–75°F median, whereas prediction markets show wider dispersion due to trader speculation on marine layer breaks [2][9].

Traders should monitor the National Weather Service’s 7-day forecast for KLAX, which currently projects highs between 72°F and 82°F for July 2026, alongside real-time marine layer thickness updates that could trigger sudden heat spikes [3][6]. A recent CBSLA report noted record-breaking heat at LAX earlier in the month, reaching 87°F, suggesting that anomalous conditions remain possible if coastal fog fails to develop [10]. Watch for any sudden shifts in wind direction from the west-southwest, which often precede temperature surges at the airport [8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Los Angeles on July 12? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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.