Highest temperature in Munich on August 17?

Platform comparison

Market context

Polymarket has this contract at 0% YES today, even though the market is about Munich Airport’s peak temperature before noon on 17 August. With settlement tied to Weather Underground’s Daily Observations table rather than the Day High & Low summary, the key question is whether the early-morning readings can still be the day’s maximum before the 12:00 UTC cut-off.

The current setup points to a modest ceiling rather than a heat spike. AccuWeather’s latest Munich forecast shows roughly 21°C with rain and thunderstorms on 17 August, while Weather Underground’s live Munich Airport feed early on 17 August was only in the low 20s Celsius, with the highest observed reading so far 73°F, about 23°C. That is consistent with a market that prices in a cooler, wetter day and leaves little room for a late-morning jump into materially higher bands.[2][3][13]

For traders, the practical catalysts are the airport station’s next observations, any forecast shifts on convection and rainfall timing, and whether a brief pre-rain warm-up prints before noon UTC. Comparable August Munich setups often hinge on cloud cover and shower timing rather than headline highs: if showers arrive early, the printed maximum stays compressed; if the cloud breaks longer than expected, the top temperature can still move up a bracket. The contract’s on-chain resolution through USDC on Polygon means the final mark depends entirely on the recorded observation sequence, not on broader city forecasts.[2][3][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Munich on August 17? 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.

UK Frequently Asked Questions

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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.

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Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

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