Pronóstico: Highest temperature in Madrid on July 3?

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Market context

Madrid is bracing for an intense heatwave from 2 to 5 July 2026, with forecasters warning daytime highs could soar to 42°C under stable high pressure and clear skies[1][2]. This extreme thermal event, far above typical seasonal norms, has already triggered a Madrid Heatwave Alert, citing dangerous midday UV exposure and persistently warm nights that prevent usual cooling[2]. The current crowd-implied probability of 0% for the "YES" outcome appears misaligned with the Met Office and BBC Weather consensus, which project highs near 36°C on 3 July, making the 37°C range the frontrunner at 61% in parallel markets[1].

Historical precedents from the 2026 European heatwaves show Spain reaching 38°C, while recent data indicates over 200 excess deaths in Spain due to unprecedented heat, underscoring the severity of this thermal spike[3][6]. In Madrid, 30 July is typically the warmest day at 34.1°C, yet the current forecast for 3 July suggests a significant anomaly, with temperatures potentially exceeding the city’s average July high of 90–103°F (32–39°C)[4][7]. Traders should watch for official updates from the Spanish Meteorological Agency (AEMET) and Wunderground’s hourly records for Adolfo Suárez Madrid-Barajas Airport, as any deviation from the 36–37°C range could shift settlement outcomes[1][2]. Recent Reuters reporting confirms Madrid already hit 40°C during the first official 2026 heatwave on 21 June, reinforcing the likelihood of extreme readings in early July[5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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