Highest temperature in Dallas on July 16?

Platform comparison

Market context

Dallas Love Field is set to record its peak temperature for 16 July 2026, a single data point that will settle a prediction market with eleven distinct Fahrenheit ranges. The event is purely meteorological, relying on the highest reading captured at the KDAL station before the settlement window closes at 12:00 UTC on 17 July.

Historical July data for Dallas typically sees highs between 90°F and 97°F, making the current crowd-implied probability of 0% for the lowest range and the market’s leading 100% assignment to 88–89°F appear statistically anomalous. Programmatic traders would flag this divergence immediately, as a 100% probability on a range below the decade average suggests either a data error in the resolution feed or a mispricing that automated arbitrage bots could exploit if the settlement source confirms standard seasonal norms.

Key catalysts for a trader include real-time updates from the National Weather Service for the Dallas-Fort Worth metroplex and the live Wunderground history feed, which serves as the official resolution source. Any sudden shift in cloud cover or precipitation forecasts from NOAA for the morning of 16 July could invalidate the 88–89°F consensus, requiring scripts to monitor the KDAL timeseries for deviations from the expected seasonal mean before the market locks.

Sources: 1 · 2

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Polymarket Bot 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.

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.