Highest temperature in Paris on July 26?

Platform comparison

Market context

Paris has cooled from the recent heatwave, and the latest forecast for the week of 20–26 July points to more typical summer conditions rather than another extreme spike. A Paris forecast published ahead of Sunday showed highs of about 28°C for the day, with the broader week expected to sit around 25–31°C and “no extreme heat” in the outlook, which argues against a very high final station reading at Le Bourget Airport.[3]

That framing matters because Paris can still produce sharp afternoon peaks even after a cooler start, but July climatology is usually far less dramatic than the 40°C-plus episodes seen earlier this month. AccuWeather’s July 2026 guidance puts Paris daily highs mostly in the mid-to-high 20s Celsius, while long-run July averages are closer to the mid-20s Celsius, so a settlement in the upper bands would require a clear late-day surge rather than a steady-day outcome.[1][6] The current 0% implied probability for a “YES” outcome therefore lines up with a market that is only weakly positioned for a standout heat extreme.

The key catalysts are the afternoon maximum itself and any late forecast updates on cloud cover, wind, or showers around Paris-Le Bourget, because those can cap the day’s high even if the morning feels warm. Traders should watch the final pre-settlement forecasts and local observations closely, since the market resolves on the highest temperature recorded during the day at that station, not on the daily average or the citywide headline forecast.[3] If the air mass remains near the forecast range and no fresh heat warning emerges, the path to an unusually high reading looks limited.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Paris on July 26? 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.

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.

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.

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.