Highest temperature in Wellington on July 31?

Platform comparison

Market context

Polymarket is pricing this Wellington airport temperature contract at **0% YES**, which implies the market sees virtually no chance of the day’s high landing in the winning range under the Wunderground settlement rule. The contract resolves off the **highest temperature recorded at Wellington Intl Airport Station on 31 July 2026**, with settlement in USDC on **Polygon** through conditional tokens, so the key question is not the city average but the specific airport observation that Wunderground logs for that calendar day.[18][14]

Historically, Wellington in late July is usually a winter, low-teen Celsius environment rather than a warm one. Long-run July climate references put daily highs around **11–13°C**, with July described as one of the coolest months and typical daytime temperatures only around **12°C**; comparable dated forecasts for the same station currently sit near **9–13°C** with rain or cloud rather than heat.[12][20][5][1] That backdrop helps explain the extreme scepticism embedded in the present price: for a temperature range market, a 0% quote generally signals traders think even a modestly above-normal reading is unlikely to change the settlement band.

For traders, the live catalysts are the **Wellington airport forecast updates, wind direction, cloud cover, and any warm advection off the north or northwest**, because these are the main factors that can lift the day’s maximum before the settlement window closes. Current short-range forecasts show patchy rain nearby and a strong-wind watch around the area, which tends to cap daytime highs rather than push them into an unusually warm range.[1][4][6] The practical watchlist is the hourly airport observations and the Wunderground daily history page itself, since the final resolved value depends on the **single highest recorded temperature** rather than a citywide average or a noon reading.[18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Wellington on July 31? 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 Alternative 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 Alternative 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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

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