Highest temperature in Wellington on July 28?

Platform comparison

Market context

Wellington will record its highest daily temperature on 28 July 2026, measured at the International Airport weather station. The settlement hinges on the single highest reading across all hours of that day, converted to Celsius and matched against predefined temperature bands.

July falls within Wellington's winter season, when mean maximum temperatures typically range from 11–13°C. Historical data from the airport station shows July extremes rarely exceed 18°C; the coldest months produce occasional sub-zero readings but sustained warmth is uncommon. The 0% crowd probability suggests traders expect the market's highest temperature bracket to fall outside realistic winter bounds, or that the framing of available ranges creates an unfavourable risk-reward. Without access to the specific temperature bands offered, the consensus reflects baseline winter climatology rather than any exceptional weather setup.

The key dependency is MeteorologicalService New Zealand's forecast track record through late July 2026. Any unusual high-pressure system or föhn wind event could push Wellington's maximum several degrees above seasonal norms—such events have historically driven July temperatures into the high teens—but current long-range models typically show limited predictive skill beyond two weeks. Traders should monitor the official NIWA outlook and Wunderground's historical data refresh schedule to confirm the exact resolution methodology, as airport station readings can occasionally differ from city-centre observations by 2–3°C depending on local exposure.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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.

Do I need to KYC for this market?

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