Highest temperature in Munich on August 10?

Platform comparison

Market context

Munich’s settlement will come down to the warmest reading logged at Munich Airport in Weather Underground’s *Daily Observations* table before the noon UTC cut-off, so traders should think in terms of a single station’s intraday high rather than the city-wide forecast headline. For a programmatic workflow, the cleanest approach is to poll the history page and map the maximum observed Celsius value into the market’s discrete range bands; the “Day High & Low” summary is explicitly secondary and should be ignored if it diverges from the table. Historical August climatology suggests the distribution is usually centred in the mid-20s Celsius, with Munich’s typical August average high around 24°C and record August highs reaching 37°C to 38°C, so the tail risk sits in brief warm spells rather than sustained extreme heat.[1][16]

For reading a 0% implied chance, the key comparison set is not long-run climate averages but how often Munich gets pushed into the upper bands on a specific summer day. August 10 is not especially anomalous in the record tables, with an average high around 25.3°C and a record high of 35.9°C on that date in one historical series, which means the market only pays if a genuine heat spike appears in the observation window.[1] Comparable August data from recent years also show that Munich can land in the high-20s or low-30s, but not every warm forecast translates into the top bracket once the station’s actual hourly observations are finalised.[7][12]

The main catalysts are straightforward: the near-term forecast for Munich Airport, any convective or frontal changes on the day, and whether afternoon sunshine persists long enough to push the station’s peak into a higher band. Traders using bots or conditional orders should watch the live history feed rather than a static daily summary, because the decisive print may come from a short-lived early-afternoon spike that never dominates the headline forecast. A useful operational check is to compare model guidance against the highest hourly temperature already posted on Weather Underground and then update exposure only if the day’s observed trend starts breaking above the prior range.[2][3][11]

Sources: 1 · 2 · 3 · 4 · 5

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

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 Kalshi Fees. 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.

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.

Do I need to KYC for this market?

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