Highest temperature in Wellington on July 15?

Platform comparison

Market context

Wellington’s highest temperature on 15 July 2026 will be measured at the Wellington International Airport Station, with the market resolving to the Celsius range containing that peak reading. The settlement window closes at 12:00 UTC on that date, and the official resolution source is Wunderground’s daily history for NZWN.

Historical mid-July readings in Wellington typically hover between 8°C and 14°C, with extremes rarely exceeding 16°C. The current crowd-implied probability of 0% for a “YES” outcome on any specific threshold suggests the market expects a moderate day, aligning with the frontrunner outcomes of 12°C and 13°C, each priced at 47% on Polymarket [1]. This divergence from a binary “YES” framing—where sportsbooks might offer a single over/under line—highlights how prediction markets capture granular distribution rather than blunt directional bets.

Traders should monitor the Bureau of Meteorology’s 48-hour forecast for Wellington, particularly any shifts in cloud cover or wind direction from the Tasman Sea, as these directly influence daytime peaks. No major announcements are scheduled, but real-time Wunderground updates on the morning of 15 July will be the definitive catalyst for final settlement [1]. The absence of extreme weather alerts in the latest regional bulletins reinforces the market’s confidence in a standard winter profile.

Sources: 1

Methodology

We track Highest temperature in Wellington on July 15? 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

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 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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.

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.