Highest temperature in Wellington on July 24?

Platform comparison

Market context

Wellington’s highest temperature is being set by the reading at Wellington Intl Airport Station on 24 July, with the market resolving to the Wunderground daily-history value in Celsius. For programmatic traders, the key is the *daily maximum* rather than a noon snapshot: any bot, alert, or conditional order should be keyed to the final station day record, and the Celsius/Fahrenheit display toggle is only a presentation layer, not a settlement input.[1]

The current crowd price of 0% YES is hard to reconcile with the market’s own frontrunner, which is 14°C at 63%, followed by 13°C at 22%.[1] That gap matters because temperature-range markets often compress late as the day progresses and the realised maximum becomes clearer; in practice, traders modelling this kind of contract usually anchor to the airport station’s actual intraday high rather than broader Wellington city weather. July norms also support a cool outcome, with typical highs around 12°C and lows near 9°C, plus frequent rain in the month, which can cap upside if cloud cover and showers persist.[2]

For a hands-on trading workflow, the main catalysts are the day’s forecast updates and any shift in the timing of the warmest part of the afternoon relative to local conditions, since a small move of 1°C can change the winning range. If you are automating entries, build around the station’s published maximum and keep a watch on forecast revisions rather than headlines; there is no separate policy event or scheduled announcement driving this market, only the weather path itself and the final airport reading.[1][2]

Sources: 1 · 2

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 Kalshi Fees, 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

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.

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.

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.