Highest temperature in Wellington on August 3?

Platform comparison

Market context

Wellington’s airport temperature on 3 August will be settled against the day’s highest reading at Wellington Intl Airport Station, so the market is effectively a question about whether the afternoon peak stays in the lower winter range or gets a brief lift from a northerly change. The crowd is pricing **0% YES**, which implies the market currently expects the reported maximum to land outside the target band or that no meaningful upside has been priced into the day’s weather path.

August in Wellington is normally cool and fairly stable rather than volatile, with typical monthly highs around **12-13.6°C** and lows around **4-9°C** in the historical averages available for the city.[1][2][9][13][14] That makes high-temperature outcomes above the low teens relatively uncommon, although the airport can still print warmer intraday spikes when cloud breaks, wind shifts, or brief sunshine coincide. For traders reading the probability, the key comparison is not the monthly mean but the day’s actual maximum relative to the station’s usual August ceiling, which sits close to the low teens rather than midsummer levels.[1][2][7][13]

The main catalysts are the local forecast updates into the morning and early afternoon, because the settlement source is the airport station’s daily high rather than a citywide average. Any sudden change in wind direction, rain band timing, or sunbreaks can move the maximum temperature by a couple of degrees, and that matters more than headline monthly averages. On the crypto side, the market settles in USDC on-chain, so positioning can be influenced by broader risk appetite, though for a weather contract the direct driver remains the meteorological print rather than BTC or ETH price action.

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

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

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 volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.

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.