Highest temperature in Paris on June 22?

Platform comparison

Active sub-markets

Market context

Paris is bracing for an unprecedented June heatwave, with forecasters warning the city could reach 40°C this week, a level never previously recorded in June for the region[3]. This extreme weather event is unfolding as France experiences record-breaking temperatures across more than half of the country, marking the most severe early heatwave in 2026[6]. The current crowd-implied probability of 0% for any outcome below 34°C reflects a market consensus that the heat will be far more intense than historical norms suggest.

Historical data frames this probability starkly: the average high for Paris in June is only 25.8°C, with the highest average day typically reaching just 28.06°C[7]. However, recent patterns show a dramatic shift, as France recorded its hottest May day since records began on 26 May 2026, with temperatures climbing to 37.8°C in southwestern regions[5]. This unprecedented May heat streak suggests the current market leaning on 37°C or higher is grounded in a tangible, accelerating climate trend rather than speculation, with Polymarket assigning a 100% chance to the 37°C outcome[1].

Traders should monitor scheduled climate declarations and upcoming campaign-finance disclosures that may influence public perception of this heat crisis, as well as real-time updates from the Paris-Le Bourget Airport Station via Wunderground. The New York Times reports that more than half of France is under heat alerts, with Paris potentially hitting 40°C, an unprecedented figure for June[3]. Lines.com notes the market has already surged 16 points to price a 38°C peak at 58.5%, indicating thin liquidity but strong conviction in the extreme forecast[9]. The primary catalyst is the ongoing heatwave itself, which is breaking long-standing temperature records across Europe[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Paris on June 22? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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

Is this market available outside the US?

Election Predictions UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

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.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Election Predictions UK triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.