Highest temperature in Guangzhou on July 9?

Platform comparison

Market context

Guangzhou on 9 July 2026 will see its peak temperature recorded at the Baiyun International Airport Station, a value that historically sits firmly within the 32–37°C range during this month. The crowd-implied probability of 0% for a temperature outside this band contradicts decades of weather data, as July is the city’s hottest period, with daytime highs consistently exceeding 32°C and frequently reaching 37°C or more[1][2].

Historical records show that daily high temperatures in Guangzhou during July average around 33°C (91°F), rarely dipping below 30°C or exceeding 38°C[2][3]. Even in May 2026, when the city experienced its hottest month in history, temperatures peaked at 36.3°C under continuous sunny conditions[4]. This pattern confirms that a 0% probability for the standard range is statistically implausible, given the region’s torrid summer climate[5][7].

Traders should monitor the official weather forecast from AccuWeather for 9 July, which currently projects highs between 87°F and 100°F (30.5–37.8°C), alongside any sudden shifts in cloud cover or rainfall that could moderate peak heat[3]. The market is leaning on the absence of extreme weather anomalies, as no major declarations or campaign-finance disclosures are expected to influence local meteorology; the primary catalyst remains the natural seasonal heat cycle typical of southern China’s summer peak[1][8].

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 Guangzhou on July 9? 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

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.

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.

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.