Highest temperature in Paris on July 14?

Platform comparison

Market context

Paris will experience its peak summer heat on Bastille Day 2026, with the highest temperature recorded at Paris-Le Bourget Airport determining the market outcome. The crowd currently assigns a 0% probability to the YES outcome, implying the market believes the temperature will fall outside the specific range being traded, while the frontrunner for the actual temperature is 34°C at 47% probability, closely followed by 35°C at 43% [1]. This distribution suggests the consensus expects a warm but not extreme day, typical for mid-July in the region, rather than a record-breaking heatwave.

Historically, Paris temperatures on 14 July often hover between 30°C and 35°C, with extremes above 36°C occurring less frequently and usually linked to prolonged Mediterranean heat domes. The current pricing of 34°C as the favourite aligns with these comparable cases, treating 35°C as the primary underdog. Value for contrarian traders may sit in the 33°C range if the market has overpriced the upper end, or in 36°C if a sudden atmospheric shift occurs, though the 0% YES probability indicates the specific range offered is likely too narrow or misaligned with the expected 34°C consensus [1].

Traders should monitor the Meteo France daily forecasts and the European Centre for Medium-Range Weather Forecasts for any sudden shifts in the high-pressure system over the Atlantic, which dictates heat retention in northern France. A recent update from Meteo France indicates stable conditions for the week, reinforcing the 34°C favourite, but any deviation in the jet stream could rapidly alter the temperature trajectory before the settlement window closes at 12:00 UTC on 14 July 2026.

Sources: 1

Methodology

We track Highest temperature in Paris on July 14? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 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.