Highest temperature in Munich on August 20?

Platform comparison

Market context

The question centres on whether Munich Airport will record a temperature of 30°C or higher on 20 August 2026. The crowd currently assigns zero probability to any outcome above 30°C, suggesting consensus expectation of a cooler-than-typical summer day or measurement uncertainty around the exact threshold bands available.

Munich's August climatology shows mean highs around 24–25°C, with the 90th percentile reaching approximately 28–29°C. Extremes above 30°C occur roughly once every five to ten years in August, making such readings genuinely uncommon rather than routine. The 0% implied probability reflects this baseline rarity, though it may overcorrect if the market has anchored on recent cooler European summers or underweights the tail risk of a heat dome event. Historical records from Munich Airport show temperatures exceeding 32°C have been recorded in August, albeit infrequently, suggesting the zero-probability assessment leaves room for contrarian positioning if European weather patterns shift toward high-pressure systems in late summer 2026.

Traders should monitor European seasonal forecasts released in June and July 2026, particularly from Météo-France and the German meteorological service, which typically issue 30-day outlooks by mid-August. Any signals of an anticyclonic pattern or heat advisory for Bavaria would shift the calculus materially. The resolution hinges on Weather Underground's Daily Observations table at Munich Airport Station, making data-source consistency critical; discrepancies between summary highs and granular observations have historically created settlement disputes on weather markets.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

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.

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.