Highest temperature in Atlanta on July 13?

Platform comparison

Market context

Atlanta's weather on 13 July 2026 will be shaped by the city's position in the deep summer heat cycle, when afternoon highs routinely exceed 90°F. The settlement window closes at midday, meaning the market resolves on the single highest temperature recorded at Hartsfield-Jackson International Airport during that calendar day. Current pricing reflects genuine uncertainty about which temperature band will capture the peak, with no range commanding meaningful probability mass.

Historical data from Atlanta's July records shows considerable year-to-year variation. Between 2015 and 2024, July 13th highs ranged from 86°F to 95°F, with most years clustering in the 88–93°F band. The 0% probability assigned to the highest range suggests traders are pricing in a cooler-than-average outcome, possibly reflecting expectations of cloud cover or an unusual weather pattern. Comparable July dates in Atlanta typically see afternoon peaks between 88°F and 94°F under normal atmospheric conditions.

The primary catalyst affecting this market is the Atlantic hurricane season and associated tropical moisture patterns, which can suppress temperatures through cloud development and convective activity. The National Weather Service's extended forecasts, updated weekly through June 2026, will provide the most actionable signal for traders. Secondary factors include any anomalous upper-level pressure systems that might drive heat domes into the Southeast. Traders should monitor seasonal climate outlooks from NOAA beginning in May 2026, as these often signal whether summer conditions will trend above or below historical norms.

Methodology

This page reviews Highest temperature in Atlanta on July 13? 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 Prediction Today, 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

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 Prediction Today. 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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.