Highest temperature in Paris on July 6?

Platform comparison

Market context

Paris is bracing for a second, intense heatwave starting midweek, with Météo-France projecting highs of 37°C (99°F) by Friday and Sunday, pushing the city near its all-time June record. The current 0% crowd-implied probability for the highest temperature on 6 July 2026 reflects a market that has not yet fully priced in this sharp escalation, despite forecasts of at least five consecutive days above 35°C and orange heat alerts for the greater Paris region. Tropical nights are expected, with temperatures failing to drop below 20°C after dark, limiting any overnight cooling relief.

Historically, Paris has seen peak July temperatures cluster around 33°C, but the 23 June 2026 record of 40.9°C in the city and 44.3°C in Pissos demonstrates the region’s capacity for extreme outliers during severe heatwaves. Traders should watch Météo-France’s daily orange and red alert updates, as well as the timing of the heatwave’s peak intensity, which is forecast for Friday and Sunday. The resolution source, Wunderground’s Paris-Le Bourget Airport Station data, will capture the day’s absolute maximum, making the 48-hour forecast window critical for assessing whether the 37°C projection holds or exceeds current bids.

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Methodology

This page reviews Highest temperature in Paris on July 6? 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.