Highest temperature in Madrid on July 12?

Platform comparison

Market context

Madrid is currently baking under an intense heatwave that has pushed temperatures well above seasonal averages across central Spain, with the city recording scorching 42°C highs earlier this week between July 4 and 7. This extreme thermal activity frames the current 0% crowd-implied probability for any specific high-temperature bracket on July 12, as the market has likely already priced in the likelihood of record-breaking conditions or a specific resolution range that traders deem improbable given the prevailing meteorological trend.

Historical precedents from the 2026 European heatwaves show peak temperatures reaching 45.1°C in southern Spain in late June, while recent July data indicates daily highs in Madrid ranging from 39°C to 42°C, significantly exceeding the average July high of 35°C. The persistence of this heat, with authorities expecting temperatures above 40°C until at least July 7, suggests that July 12 will likely fall within a high-temperature bracket, making the current zero probability a potential mispricing if the heatwave continues without significant cooling.

Traders should monitor the latest weather updates from AccuWeather and Euronews for any announcements regarding cooling fronts or continued heat alerts, as the settlement depends entirely on the highest temperature recorded at Adolfo Suárez Madrid-Barajas Airport Station. The key dependency is whether the current dry, cloud-free conditions with uninterrupted sunshine persist through July 12, which would likely sustain dangerous afternoon heat and high UV levels, potentially pushing the day's maximum into a higher temperature range than currently anticipated by the market.

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Methodology

This page reviews Highest temperature in Madrid on July 12? 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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'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.

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 Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.