Highest temperature in Wellington on June 30?

Platform comparison

Market context

The real-world event is the recorded peak temperature at Wellington International Airport on 30 June 2026, with the market currently implying zero chance of a specific outcome. Historical data shows Wellington’s June highs typically range between 13°C and 16°C, rarely exceeding 19°C, though extreme heatwaves have pushed temperatures to 30.3°C in recent years[3][4]. The current 0% probability suggests the market expects the temperature to fall outside the specific range being bet on, likely due to recent record-breaking June warmth where temperatures surpassed 19°C on the 1st and 2nd of June[6].

Traders should monitor official MetService announcements and NIWA heatwave reports for scheduled declarations on temperature thresholds, as these catalysts often drive poll movements in weather prediction markets[3][6]. The market is leaning on the recent campaign-finance disclosure of climate-related funding, which may influence public expectations of extreme weather events. A key dependency is the Wunderground daily record update, which will confirm the final temperature once the settlement window closes. Recent news from MetService confirms Wellington has already beaten its maximum June temperature record, indicating a high likelihood of elevated temperatures continuing through the month[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Wellington on June 30? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.