Highest temperature in Wellington on July 13?

Platform comparison

Market context

Wellington International Airport is experiencing a cool, gusty midwinter day with current temperatures hovering around 13°C to 15°C and strong southerly to south-westerly winds. Historical data for mid-July at this location shows daily highs typically clustering near 14°C (54°F), rarely exceeding 15°C (58°F) even during the warmest spells [8]. The crowd-implied probability of 0% for any outcome suggesting a significantly higher temperature aligns with these climatic norms, as July in Wellington is characterised by consistent cold rather than heat spikes.

Comparing this to recent years, no recorded July 13 high temperature at NZWN has breached 16°C, making any market outcome implying a warmer day statistically improbable against the baseline [8]. The divergence between prediction-market pricing and potential sportsbook lines on similar weather contracts is negligible here, as analyst consensus on Wellington’s winter thermal ceiling remains firm; traders on platforms like Polymarket versus Kalshi should note that the 0% probability reflects a near-certainty of failure for any "high temperature" proposition outside the narrow 12–15°C range.

Traders should monitor the National Institute of Water and Atmospheric Research (NIWA) updates for any sudden shifts in wind direction that might bring warmer air from the north, though current forecasts indicate fresh winds with gusts up to 55 km/h persisting through the settlement window [9]. The primary catalyst remains the absence of a significant northerly flow, which is the only meteorological mechanism capable of pushing Wellington’s July temperatures above 16°C; without this, the settlement will almost certainly resolve within the standard winter band [9]. No major weather announcements are scheduled to alter this trajectory before the 2026-07-13T12:00:00Z deadline.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Wellington on July 13? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.