Highest temperature in Atlanta on August 5?

Platform comparison

Market context

Atlanta’s daytime high on 5 August is the relevant event, and the settlement source is the Hartsfield-Jackson airport observation in Fahrenheit, so the practical question is whether the day’s peak lands in the 84–85°F band, 86–87°F, or another nearby bucket. The market’s current 0% YES read looks inconsistent with the broader temperature framing because Atlanta’s early-August climatology is normally hot, with average August highs around the mid-80s Fahrenheit and forecast services showing high-80s to low-90s readings on similar dates.[2][12][17]

For a trader using conditional orders or a bot, the useful comparison is how Atlanta temperature markets typically compress towards a narrow range once the day is inside the forecast horizon: the current venue snapshot shows the crowd clustering around 84–85°F and 86–87°F rather than extreme outcomes.[1] Historical weather data also shows that Atlanta’s airport can still print 90°F-plus highs in summer, including a 100°F maximum somewhere in the metro climate record last summer, so the upper tail is real even when the modal outcome is lower.[11] In programmatic terms, this is a simple thresholding problem: ingest the latest airport forecast, compare the expected maximum against the market’s bins, and adjust exposure as the forecast centre shifts.

The main catalysts are straightforward but important: updated National Weather Service discussions, any forecast model changes, and the actual airport daily high path through the afternoon. The National Weather Service’s Atlanta climate and forecast products are the most relevant public inputs for intraday reassessment, while contemporaneous weather pages already showed a warm day structure for 5 August rather than a cool anomaly.[8][7] The settlement source is Wunderground’s daily history for KATL, so the final print depends on the highest observed airport temperature, not the city average or a broadcaster’s rounded daytime high.[3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Atlanta on August 5? 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 Kalshi Fees, which mirrors the Polymarket order book at 0% fees.

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

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 Kalshi Fees 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.