Highest temperature in Wellington on June 26?

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Market context

The real-world event hinges on whether Wellington International Airport records a peak temperature within a specific Celsius range on 26 June 2026, with the current market implying a near-zero chance of the "YES" outcome. Historical data for Wellington in June shows average daily highs typically falling between 54°F and 57°F (12°C to 14°C), with overcast conditions dominating 42% of the month[4]. Notably, a recent prediction market for 11 June 2026 priced a 14°C maximum at 44.5%, suggesting that temperatures in this range are common but not guaranteed[1]. However, MetService NZ has already reported that Wellington beat its record June maximum earlier this month with over 19°C recorded, indicating that while extreme warmth is possible, the current 0% probability likely reflects a specific range threshold that is statistically unlikely to be hit again under prevailing gale and rain conditions[5][2].

Traders should monitor immediate weather dependencies, specifically the forecast of strong winds and heavy rain expected through 27 June, which suppresses peak temperatures[2]. The settlement relies on Wunderground data for the highest temperature at all times on 26 June, meaning any sudden shift in cloud cover or wind direction could alter the outcome, though the current 51°F (11°C) reading with 24 mph south-south-westerly winds points to continued cooling[2][9]. While crypto markets often tie weather predictions to macro volatility or USDC settlement flows, this contract is purely weather-driven; no exchange spot rates or whale flows directly influence the temperature, but traders watching BTC/ETH macro trends should note that extreme weather events can sometimes correlate with broader market uncertainty[5]. The key catalyst is the MetService update on record-breaking warmth, which, despite its significance, does not currently shift the probability for this specific range on 26 June[5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads Highest temperature in Wellington on June 26? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

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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.