Highest temperature in Paris on July 22?

Platform comparison

Market context

Paris-Le Bourget is sitting near a fairly ordinary July temperature profile, which makes the **26–28°C** band the natural favourite zone for the day’s high rather than anything extreme. The market’s current **0% YES** price is a clear underdog signal against a summer-weather baseline, but the consensus still appears concentrated around the mid-20s, with the contract’s own pricing showing the tightest clustering around **25°C and 26°C**. That leaves little obvious value in chasing a big move unless traders think the day will materially underperform the seasonal norm or remain capped by cloud cover and wind.[1][3]

Historically, Paris in July usually settles around an average high of about **26°C**, with the month spanning a wide but still summer-leaning range of daily highs.[3] For handicapper purposes, that means the favourite is not a heatwave scenario but a standard warm-day result, while the underdog case is a cooler-than-normal afternoon that never quite reaches the expected peak. A market implying zero chance for the yes outcome looks detached from that seasonal anchor, although the practical edge depends on how the contract’s chosen temperature bucket is structured and whether the day’s maximum lands right on a boundary.[1][3]

The main catalyst is the actual intraday temperature path at Paris-Le Bourget before the settlement window closes, because the winning bucket will be determined by the highest reading recorded there on the day.[1] Short-term shifts in cloud, precipitation, and wind can matter more than broad seasonal averages, so traders should watch the live airport forecast and any late-day convection that could stop temperatures from reaching the consensus zone.[2][1] BBC Weather currently shows Paris-Le Bourget around **21°C**, which is below the market’s mid-20s clustering and keeps the door open for a lower-than-expected finish if the afternoon fails to warm further.[2]

Sources: 1 · 2 · 3

Methodology

This page reviews Highest temperature in Paris on July 22? 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 Who Will Win 2026, 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 Who Will Win 2026. 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 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 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.