Highest temperature in Madrid on July 31?

Platform comparison

Market context

Madrid’s late-July heat profile usually sits in the low-to-mid 30s Celsius, but it can move sharply higher when an Iberian heat plume builds over central Spain. Long-run July averages for Madrid show daily highs around 33°C, while historical climate summaries note that readings above 37°C are uncommon but do occur, so a settlement band above that level is not out of range in a hot spell.[7][17] The market’s current 0% YES implies the crowd is treating the upper tail as very unlikely, yet the benchmark for this event is the airport station’s *highest* recorded temperature on the day, not the daily mean, which means one brief afternoon spike can matter more than the overall day shape.

Recent comparable cases argue for caution with an extreme-low probability. AccuWeather’s July outlooks for Madrid show late-month highs frequently around 90–96°F, roughly 32–36°C, but they also leave room for hotter outliers on specific days.[2][3][5] More importantly, an early-July 2026 spell brought temperatures near 40°C in Madrid, with local reporting saying the first official heatwave of 2026 had set in and authorities were warning about sun exposure and wildfire risk.[20] That kind of pattern is the main historical cue for this market: if a broader heatwave persists or re-intensifies, the upper settlement bins become much more live than the crowd price suggests.

For traders, the key catalysts are the short-range forecasts and any update on the strength, timing, and duration of the heat ridge over central Spain. The most relevant practical check is whether Madrid-Barajas is forecast to reach the upper 30s during the afternoon, because airport readings can be materially different from city-centre forecasts and one peak observation decides the outcome on Wunderground.[12] Wunderground’s daily history page for Madrid-Barajas is the settlement source, so intraday adjustments to forecast highs, cloud cover, wind, or Saharan dust can move expectations quickly, especially if official Spanish or local weather outlets revise the maximum for the day upward into the 38–40°C zone.[4][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Madrid on July 31?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.