Highest temperature in Wellington on July 6?

Platform comparison

Market context

On 6 July 2026, the real-world event determining this contract is the highest temperature recorded at Wellington International Airport in degrees Celsius, with the market currently pricing a 0% chance of the “YES” outcome. Historical data shows July is Wellington’s coldest month, with average highs around 12°C (54°F) and lows near 4°C (47°F), making extreme heat highly improbable [4][7]. Comparable cases from recent years confirm that daily maxima rarely exceed 15°C in early July, and the current 0% probability aligns with this consistent thermal pattern, suggesting the market views any significant deviation as virtually impossible.

Traders should monitor real-time weather updates from Wunderground and the National Weather Service, as sudden shifts in wind direction or cloud cover could marginally affect temperatures, though no major heatwave catalysts are forecast [2][3]. The settlement relies exclusively on Wunderground’s recorded maximum for the day, with USDC settlement and on-chain resolution tied to BTC/ETH macro stability; any volatility in funding rates or whale flows could indirectly influence liquidity but not the underlying weather outcome [9]. With no extreme heat announcements or seasonal anomalies expected, the contract remains anchored to historical norms, and the 0% probability reflects a rational assessment of Wellington’s winter climate.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

Can I use Bitcoin directly?

No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.

How does UMA secure the resolution?

The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.