Highest temperature in Wellington on July 6?

Platform comparison

Market context

The underlying event is the highest temperature recorded at Wellington International Airport on 6 July 2026, a midwinter day in New Zealand where historical norms place daily highs near 13°C (53°F). Current crowd-implied probability for a "YES" outcome sits at 0%, yet this contradicts broader market consensus across platforms. Polymarket shows trader sentiment clustering tightly around 12–13°C, with numerical weather models and agency guidance from the past 48 hours assigning a 41.5% probability to 12°C and 33.5% to 13°C. Lines.com estimates a 51% chance the maximum lands exactly at 13°C, framing the contract as a near coin-flip rather than an impossibility. This divergence between the 0% crowd line and the 51% analyst consensus highlights a significant pricing inefficiency for cross-platform odds comparison.

Historical precedents reinforce the plausibility of temperatures in the 12–13°C range. Wellington’s July averages rarely fall below 13°C, with daily highs typically hovering around 13°C (53°F), rarely dipping below 11°C or exceeding 15°C. While extreme outliers exist—such as the all-time New Zealand record of 42.4°C in 1973 or Wellington’s recent 30.3°C heatwave in Kelburn—these are summer anomalies irrelevant to midwinter conditions. The coldest recorded day in Wellington was 3.6°C in 2011, but such extremes are statistical outliers. The current 0% probability ignores the tight clustering of modern forecast outputs, which consistently place the likely maximum between 12°C and 13°C, making the "impossible" line factually unsupported.

Traders should monitor real-time updates from Wunderground, the official resolution source, and watch for any revisions to temperature data within the settlement window ending 2026-07-06T12:00:00Z. No major announcements or scheduled dependencies currently alter the forecast, but sudden shifts in long-range outlooks could emerge. Recent agency guidance from NIWA and numerical weather prediction outputs issued in the past 48 hours remain the primary catalysts for price movement. As noted in NIWA’s heatwave analysis, temperature records can shift rapidly, though midwinter conditions in Wellington remain stable. The key dependency is the accuracy of the Wunderground dataset, which will determine the final resolution.

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Methodology

This page reviews Highest temperature in Wellington on July 6? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 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.