Highest temperature in Wellington on July 27?

Platform comparison

Market context

The highest temperature at Wellington International Airport is what settles this market, measured in Celsius from the Wunderground daily history page for 27 July 2026. With the current crowd-implied probability at 0% for **YES**, the market is effectively saying a quoted temperature band is not yet being priced in as a live outcome, which can happen when traders are waiting for the first observed reading rather than extrapolating from early forecasts.[1]

For context, Wellington in July is usually a cool, damp, windy winter setting, with typical highs around 12°C, lows near 9°C, and frequent rain; that makes double-digit maxima plausible but keeps very warm outcomes unusual.[2] For a power user running a programmatic workflow, the practical approach is to map the final airport maximum against the market’s bands and compare it with live weather observations, rather than rely on citywide forecasts alone. On Polymarket-style temperature markets, the crowd often clusters around the most likely band as the day unfolds, so a 0% print can simply reflect an absence of conviction before the official daily high is known.[1]

The main catalysts are the airport’s actual observed temperatures through the day, the timing of the final daily maximum, and any short-term forecast shifts that alter expectations for the afternoon peak. A bot or conditional-order setup would typically monitor the Wunderground history page, track the latest forecast line against the existing band structure, and update orders as soon as the day’s high moves into or away from adjacent ranges.[1][2]

Sources: 1 · 2

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 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 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.

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.