Highest temperature in Wellington on July 24?

Platform comparison

Market context

Polymarket is pricing this Wellington temperature contract at **0% YES** on USDC-settled, Polygon-based conditional tokens, which means the market is effectively assigning no chance that the day’s **highest** temperature at Wellington Intl Airport will land in the contract’s YES range. With settlement tied to Wunderground’s daily history page for NZWN, the key issue is not whether July in Wellington can produce mild afternoon warmth, but whether the maximum logged before the 12:00 UTC cutoff reaches the specified Celsius band.

A 0% print is easier to understand when set against Wellington’s winter climatology. Late July is mid-winter in the city, when daytime highs are typically cool and constrained by the location’s maritime exposure and frequent wind. In practical terms, that makes the upper temperature bands harder to hit than in inland New Zealand locations, so traders tend to treat even modest warming as relevant only if the forecast points to an unusually mild, clear day. On a market like this, the strongest anchor is the airport observation itself, because conditional tokens resolve on the recorded maximum rather than on city-wide averages or forecasts.

The near-term catalysts are straightforward: the official forecast path into the settlement window, any change in cloud cover or wind direction, and the actual sequence of hourly observations at Wellington Airport. For Polymarket users, the main dependency is the Wunderground reading that will finalise the contract, so late swings in the station’s max temperature matter more than broader regional commentary. If forecasters trim expected highs into the low teens Celsius, the 0% view is reinforced; if a sunnier, calmer setup emerges, traders would watch whether the market reprices before the settlement window closes.

Methodology

We track Highest temperature in Wellington on July 24? 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.

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 Scam?. 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.

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.

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.