Highest temperature in Wellington on June 26?

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Market context

Wellington is bracing for another cold, wet June day as light rain and fog dominate the early hours, with current observations showing temperatures hovering around 8°C and heavy falls expected through the morning. The 0% crowd-implied probability for a high temperature above typical ranges reflects the relentless winter pattern: daily highs in June at Wellington International Airport rarely exceed 14°C, usually settling between 10°C and 14°C, while cloud cover remains essentially constant at 42% overcast or mostly cloudy throughout the month[1]. Historical data from the winter solstice period confirms this trend, with recent forecasts for mid-June showing highs of only 9°C amid persistent rain and northwesterly winds gusting up to 40 km/h[2].

Traders should monitor the MetService extended forecast for today, which predicts periods of rain with heavy falls at times, pushing the high to just 9°C[4]. The key dependency is the wind shift from northwesterly to southerly later today, which typically brings cooler air and reinforces the low-temperature ceiling; any sudden clearing or sustained northerly surge could briefly lift temperatures, but current models suggest this is unlikely given the rising pressure and persistent cloud cover[5]. Watch for updates on the 26 June forecast from the MetService, as heavy rainfall south of Petone may further suppress temperatures, and note that the settlement window ends at 12:00 UTC, meaning the highest recorded temperature will be captured within the first seven hours of the day[4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Wellington on June 26? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Where can I trade this market with the lowest fees?

On Prediction Today, which mirrors the Polymarket order book at 0% fees. 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.

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.

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.