Highest temperature in Wellington on July 6?

Platform comparison

Market context

The underlying event is the maximum temperature recorded at Wellington International Airport on 6 July 2026, with the current market implying a 0% chance of a specific outcome. Historical data frames this probability sharply: July in Wellington is consistently cool, with daily highs averaging around 13°C (53°F) and rarely exceeding 15°C [9]. Recent records show the city’s absolute maximum reached 30.3°C in January 2024, but July averages remain near 5°C for lows and 13°C for highs, making extreme heat in midwinter virtually impossible [4][7]. The 51% implied probability for exactly 13°C on a similar date in early July 2026 suggests the market treats this as a coin flip, yet the 0% current crowd-implied probability for the target outcome likely reflects a mismatch in the specific temperature range being queried [1][2].

Traders should monitor real-time weather updates from Wunderground, the official resolution source, and watch for any anomalous heatwave announcements from NIWA, New Zealand’s national climate agency [4]. While no immediate heatwave is forecast for Wellington in July, the region’s exposure to southern ocean systems means rapid temperature drops are more probable than spikes [9]. A key dependency is the timing of the settlement window, which ends at 12:00 UTC on 6 July 2026, requiring precise alignment with the daily maximum recorded across all times [4]. Recent news from NIWA confirms that Wellington’s climate remains stable in winter, with no significant deviations from the 13°C average expected, reinforcing the low probability of extreme outcomes [4]. The divergence between the 51% probability for 13°C on July 2 and the 0% current implied probability for the July 6 target highlights a potential pricing inefficiency or a misalignment in the specific temperature range being traded [1][2].

Sources: 1 · 2 · 3 · 4 · 5

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 PolyGram, which mirrors the Polymarket order book at 0% fees.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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 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.

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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.