Highest temperature in Wellington on July 23?

Platform comparison

Market context

Wellington International Airport’s highest temperature on 23 July will be set by the day’s peak reading at NZWN, with settlement determined from Wunderground’s daily history page for that station. In practical terms, a bot or script only needs to monitor the daily maximum as it updates through the local afternoon and then map that value to the market’s temperature band before the window closes.

The current 0% YES pricing reflects how extreme heat is unusual in Wellington’s mid-winter climatology. WeatherBlaze’s station history says Wellington’s highest recorded temperature reached 26.0°C, but that peak was in February 1982, which is far outside the winter regime.[1] For a July 23 outcome to land in a higher band, the market needs a clear warm anomaly rather than ordinary variability, so historical comparable cases should be treated as low-frequency tail events rather than a baseline.

For a programmatic approach, the key dependency is the Wunderground observation feed itself, not city forecasts alone, because the market resolves on the highest observed temperature for that specific day at Wellington Intl Airport Station. Traders watching copies, conditional orders, or alert bots should focus on the intraday maximum and any forecast revisions that imply a warm northerly flow, but the final reference point remains the station’s recorded daily high on Wunderground.[1]

Sources: 1

Methodology

This page reviews Highest temperature in Wellington on July 23? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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

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 Polymarket Bot 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.

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.

Do I need to KYC for this market?

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

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.