Pronóstico: Highest temperature in Wellington on June 26?

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Market context

The underlying real-world event is straightforward: on 26 June 2026, Wellington International Airport will record its highest temperature for the day, and the market resolves to the specific Celsius range containing that value. Today, Polymarket prices the YES contract at 0%, implying the crowd believes the temperature will fall outside the defined range, likely due to an expectation of unusually cold conditions or a misalignment with the settlement criteria.

Historically, June in Wellington sees daily highs decreasing from 56°F to 53°F, rarely dropping below 48°F or exceeding 61°F[2]. However, recent anomalies are significant; MetService NZ confirmed Wellington has already beaten its record maximum June temperature, with over 19°C recorded earlier in the month[4]. This record-breaking warmth suggests the 0% probability may be an overreaction to typical seasonal averages, ignoring the current trend of elevated temperatures that could push the 26 June reading into higher ranges.

Traders should monitor the MetService NZ forecast updates and any sudden shifts in the Southern Ocean current, which directly influence Wellington’s thermal profile. The settlement relies on Wunderground data for the Wellington Intl Airport Station, so verifying the sensor’s uptime is critical before the 12:00 UTC deadline[4]. While no specific weather announcement is scheduled for 26 June, the dependency on real-time on-chain data means any delay in Wunderground’s feed could invalidate the resolution, making the conditional token mechanics on Polygon a key factor in the trade’s risk profile.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

Where can I trade this market with the lowest fees?

On PolyGram, 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.

Is this market available outside the US?

PolyGram 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.

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 does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.