Highest temperature in Atlanta on May 25?

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Market context

On 25 May 2026, the highest temperature recorded at Atlanta's Hartsfield-Jackson International Airport will fall within one of several defined ranges. The settlement mechanism pulls directly from Weather Underground's historical data archive for that specific station and date, with the window closing at midday UTC. This is a straightforward instrumental reading—no adjustments, no averaging across multiple stations—making it suitable for automated data feeds and conditional order logic that monitors Weather Underground's API in real time.

Atlanta's May temperatures cluster reliably between 82–92°F, with historical extremes occasionally pushing toward 95°F on unusually warm years. The 0% crowd probability across all ranges suggests either a data-loading issue or genuine uncertainty about which bracket will resolve. For programmatic traders, the relevant comparison is 25 May 2025 and surrounding years; checking Wunderground's historical tables for late May patterns at KATL reveals that temperatures above 90°F occur roughly 30–40% of the time in this window, whilst readings below 80°F are uncommon but not impossible during cooler spring patterns.

Traders should monitor the National Weather Service's 10-day forecast as it enters the May 2026 window, particularly any ridge-building patterns or upper-level troughs that would push temperatures toward extremes. Seasonal climate indices—the Atlantic Multidecadal Oscillation phase and soil moisture anomalies across the Southeast—can signal whether May 2026 tracks warmer or cooler than the 30-year normal. Conditional orders tied to NWS forecast updates would allow hands-off position management as the settlement date approaches.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Polymarket Review UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Review UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

What does it cost to trade on Polymarket Review UK?

Zero. Polymarket Review UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.