Highest temperature in Wellington on July 7?

Platform comparison

Market context

The market hinges on whether Wellington International Airport records a high temperature above the typical early-July range on 7 July 2026. Current crowd-implied probability sits at 0% for any outcome above the baseline, reflecting strong confidence that temperatures will remain within the usual cool band. Historical data shows that early July in Wellington typically sees daytime highs between 11°C and 15°C, with the warmest day in the first ten days of July reaching 17.8°C on 6 July in past records[4][5]. This suggests that while a spike above 16°C is possible, it remains an outlier, aligning with the market’s low probability for higher ranges.

Traders should monitor seasonal climate outlooks from NIWA, which indicate that May–July 2026 air temperatures are equally likely to be near or below average across the South Island and western North Island, with occasional cold snaps possible under persistent high pressure[2]. The market leans heavily on the catalyst of southerly-quarter air flow anomalies expected early in the period, driven by strong high-pressure systems approaching from the west—a pattern characteristic of El Niño conditions that typically suppress daytime highs[2]. Recent BBC Weather observations for 7 July confirm light rain showers, a moderate southerly breeze, and a current temperature of 13°C, reinforcing the likelihood of cool conditions[3]. No scheduled political debates or campaign-finance disclosures are expected to influence weather outcomes, making this a purely climatological event.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Wellington on July 7? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

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.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

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.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

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.