Highest temperature in Paris on July 23?

Platform comparison

Market context

Paris’s 23 July maximum is typically a **summer warmth** question rather than a heat-extreme one, with July average highs around **27°C** and daily highs usually sitting in the mid-20s. For this market, the crowd’s **0% YES** is consistent with a view that the observed peak at Paris-Le Bourget will land in the lower temperature bands rather than an unusually hot outlier. The resolution source is the station’s daily history on Wunderground, so the relevant number is the day’s single highest reading there, not the afternoon forecast peak. [2][5][1]

The historical frame still matters: Paris in July is generally warm, but individual days commonly top out around **23°C to 25°C**, and temperatures above **31°C** are described as uncommon in normal July conditions. That makes the market sensitive to whether the day stays near climatology or gets a brief spike from a hot air mass; in practical terms, traders are leaning on the expectation of a routine summer day rather than a heatwave-style setup. [3][2]

For catalysts, the key watchpoint is the **intraday evolution of the Paris forecast**: any shift in regional heat advection, cloud cover, or thunderstorms could alter the eventual station high, even late in the day. The market is effectively leaning on the weather-service pattern rather than a political-style event calendar, so the relevant trigger is the updated forecast path into the settlement window and the eventual Wunderground station observation. [1][2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Paris on July 23? 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 Election Predictions UK 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

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.