Highest temperature in Warsaw on July 27?

Platform comparison

Market context

On 27 July 2026, the highest temperature recorded at Warsaw Chopin Airport will fall into one of several defined ranges. In prediction markets, traders buy YES or NO shares on whether an outcome will occur. A YES share pays out if the event happens; a NO share pays out if it doesn't. Here, instead of a simple yes/no, the market resolves to whichever temperature band contains the actual high for that day, with each range representing a distinct outcome traders can back.

Warsaw's summer temperatures have historically peaked in the low-to-mid 30s Celsius. July is typically the warmest month in the city, with average highs around 24°C, though extremes regularly exceed 30°C. The record high for July at Warsaw Chopin Airport stands at 37.8°C, set in 2015. The current 0% probability on the highest range suggests traders expect a cooler-than-extreme outcome for this particular date, consistent with typical July variability rather than record-breaking heat.

The key variable affecting July 2026 temperatures will be the position and strength of high-pressure systems moving across central Europe. Traders should monitor European weather forecasts from late June onwards, particularly from Météo-France and the UK Met Office, which publish extended outlooks 10–14 days ahead. Any significant heat dome or blocking pattern developing over the continent in early July would shift expectations toward higher temperature ranges. Real-time data from Wunderground will be the settlement source, making the airport station's official readings the definitive reference.

Methodology

We track Highest temperature in Warsaw on July 27? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Market UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.