Highest temperature in Wellington on July 27?

Platform comparison

Market context

Wellington’s maximum temperature on 27 July will be judged against the reading at Wellington Intl Airport, so the key question is whether the day prints a mild winter high or stays closer to the usual single-digit to low-teens range. Current market pricing has not settled into a broad consensus: one market view shows 11°C as the leading outcome at 74%, with 10°C next at 21%, while a separate forecast snapshot also points to 10–11°C as the dominant band, implying the crowd is still clustered around a narrow corridor rather than a wide temperature spread.[1]

That framing matters because Wellington’s July climate is typically cool, wet and breezy. A July climatology page puts average highs around 12°C, with lows near 9°C, alongside frequent rain and notable wind, which makes a mid-teens outturn possible but less common than temperatures in the low teens.[2] Historical July data on a comparable Wellington weather page shows daytime highs can occasionally reach the mid-teens, with one recent July peak of 15.7°C, but the average daytime figure was still only 12.7°C.[3] Against that backdrop, a 0% YES price looks like an extreme that is hard to reconcile with the usual range unless the contract’s strike bands are unusually set away from the most likely highs.[1]

The main catalysts are straightforward weather dependencies rather than event risk: the official airport observation sequence on the day, any late revisions before the next day’s first datapoint, and whether the peak arrives early enough to be captured before the settlement window closes at 12:00 UTC.[1] Traders should also watch for any forecast updates that shift wind direction or incoming frontal conditions, since Wellington’s exposed coastal location can change the day’s maximum quickly.

Sources: 1 · 2 · 3

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

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 Best Prediction Markets. 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'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.

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.