Highest temperature in Paris on July 9?

Platform comparison

Market context

Paris is currently bracing for its second heatwave of 2026, with meteorologists forecasting peak temperatures near 36°C to 37°C this week, making the current crowd-implied probability of 0% for hitting a specific high range appear starkly disconnected from the immediate weather reality[1][3]. Historical data from previous July heat events in Île-de-France shows that temperatures routinely breach 35°C during such domes, with the national thermal indicator recently hitting record highs that signal a persistent, dangerous trend across the department[6]. The 0% market stance ignores the fact that mid-July heatwaves in Paris have historically delivered highs between 35°C and 38°C, suggesting the market is leaning on an outdated baseline rather than the active, intensifying forecast[4].

Traders must monitor the scheduled declarations from Météo France regarding the red heatwave alert, which covers 54 departments and indicates temperatures will persist around the clock[6]. The primary catalyst is the official daily temperature report from the Paris-Le Bourget Airport Station, which will be released via Wunderground and could confirm if the peak reaches the 37°C threshold projected for Tuesday and Wednesday[3]. Recent campaign-finance disclosures have not yet influenced weather reporting, but the timing of the next heatwave declaration is critical, as the settlement window ends on 9 July 2026, aligning precisely with the projected peak of this second heat event[1]. The market is currently leaning on the assumption that the heat will break, a view contradicted by the 7-to-10-day duration forecast for this specific weather system[4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Paris on July 9? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

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