Highest temperature in Wellington on July 6?

Platform comparison

Market context

The real-world event is the daily maximum temperature recorded at Wellington International Airport on 6 July 2026, measured in degrees Celsius. Current crowd-implied probability for a specific outcome sits at 0% YES, yet a competing platform, Lines.com, estimates a 51% chance the peak lands exactly at 13°C[1]. This stark divergence between a zero-implied probability and a coin-flip estimate for 13°C highlights how cross-platform odds can vary wildly on the same weather contract, with one market treating the event as near-certain and another as impossible.

Historical data frames this volatility: Wellington’s July daily highs typically hover around 53°F (11.7°C), rarely exceeding 57°F (14°C)[8], while the city’s all-time maximum reached 30.3°C in a recent heatwave[3]. The 13°C target sits squarely within the normal winter range, making the 51% Lines.com estimate plausible against the 0% crowd view, especially given that the coldest day in records was 3.6°C[7]. Traders should monitor the National Institute of Water and Atmospheric Research (NIWA) heatwave bulletins for early signs of anomalous warming or cooling, as sudden shifts in cloud cover or wind patterns from the Tasman Sea can swing temperatures by several degrees within hours[3]. No major scheduled announcements are pending, but real-time Wunderground data updates will be the sole resolution source, meaning any sensor drift or transmission lag could distort the final reading[1].

Sources: 1 · 2 · 3 · 4 · 5

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 UK, 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

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 Best Prediction Markets UK 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.