Highest temperature in Paris on August 20?

Platform comparison

Market context

Paris-Le Bourget Airport is forecast to experience warm conditions on 20 August 2026, with meteorological models currently suggesting a high between 25–28°C for that date. The 0% crowd probability reflects uncertainty about which specific temperature band will be recorded, rather than scepticism about warm weather materialising. Over the past 48 hours, European weather models have shown modest cooling compared to earlier runs, though mid-August typically remains one of the warmest periods in the Paris calendar.

Historical August data from Le Bourget shows daily highs frequently exceed 27°C during this period, with readings above 30°C occurring in roughly one-third of years. The station's long-term August average sits around 25–26°C, meaning the forecast range aligns with typical late-summer conditions. Extreme heat events (above 35°C) are rare but not unprecedented; the 2003 heatwave saw readings near 37°C in the Paris region, though such outliers occur roughly once per decade.

Traders should monitor the European medium-range forecast updates from Météo-France and ECMWF, particularly runs issued 5–7 days before the settlement date, as these typically narrow uncertainty bands. High-pressure systems tracking across continental Europe in early August will be the primary driver of final temperatures. The resolution hinges on Weather Underground's Daily Observations table at Le Bourget specifically—not summary figures—so familiarity with that station's historical recording patterns and any potential sensor calibration issues would inform positioning.

Methodology

This page reviews Highest temperature in Paris on August 20? 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.

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Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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