Highest temperature in Wellington on June 26?

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Market context

The real-world event hinges on the peak temperature recorded at Wellington International Airport on 26 June 2026, a date deep in New Zealand’s winter where highs typically hover between 12°C and 15°C. Current crowd-implied probability of 0% for any specific high suggests the market views the outcome as either a near-certainty of a standard winter range or a lack of liquidity to price outliers. Historically, June in Wellington sees average daily highs dropping from 57°F to 54°F (roughly 14°C to 12°C), with overcast conditions dominating 42% of the month [4]. A comparable case is the 11 June 2026 market where Wellington recorded a maximum of exactly 14°C with 44.5% implied probability, indicating that 14°C remains a plausible, though not guaranteed, ceiling for early-mid June [1]. Even more striking, MetService NZ recently confirmed Wellington has already beaten its record June maximum with over 19°C recorded earlier this month, proving that extreme outliers are possible despite the seasonal norm [5].

For a trader approaching this programmatically, the primary catalyst is the live weather feed from Wunderground, which resolves the market at 12:00 UTC on 26 June. A power-user would script a bot to poll the Wunderground API for the hourly maximum, comparing it against the 19°C anomaly seen earlier in June [5]. While no specific weather announcement is scheduled for 26 June, the dependency on the MetService forecast remains critical; their recent data shows daily highs ranging from 51°F to 55°F (10.5°C to 12.8°C) for June 2026, with overnight lows between 40°F and 50°F [6]. The current forecast for 26 June predicts gales and heavy rain with temperatures around 51°F (11°C), which aligns with the 0% probability for higher ranges [2]. Traders must monitor the wind speed and pressure trends, as the current 24 mph south-south-westerly wind and rising pressure at 996mb often suppress temperature spikes [2]. Any deviation from this pattern, such as a sudden pressure drop or wind shift, would be the only signal to adjust conditional orders before the settlement window closes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket Review UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review UK triggers a quick verification flow that finishes in 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.