Highest temperature in Shenzhen on July 20?

Platform comparison

Market context

Shenzhen is experiencing peak summer heat today, with the Bao’an International Airport station recording sunny conditions and temperatures reaching 29–30°C, while humidity and cloud cover fluctuate near thunderstorm thresholds. The prediction market for the highest temperature on 20 July 2026 currently shows a 0% implied probability for the YES outcome, suggesting the crowd expects the day’s peak to fall outside the specified range, despite today’s real-time readings of 88°F (31°C) and a RealFeel of 104°F [1][2].

Historical data for late July in Shenzhen typically sees daily highs between 32°C and 35°C, with occasional spikes above 36°C during dry, high-pressure spells. The current 0% probability diverges sharply from this norm, implying either a mispriced range or an expectation of significant cooling—perhaps from an approaching typhoon or monsoon trough. Comparable cases from 2023–2025 show that even on cloudy or rainy days, Shenzhen’s airport station rarely dips below 28°C at its peak, making a sub-range outcome unlikely unless extreme weather intervenes.

Traders should monitor the China Meteorological Administration’s 72-hour forecast for typhoon development in the South China Sea, as well as Wunderground’s hourly updates for the Bao’an station, which will serve as the official resolution source. A recent AccuWeather report notes rising humidity and scattered thunderstorm activity, which could suppress peak temperatures if sustained [1]. Any official announcement of a tropical cyclone entering Guangdong before 20 July would be the primary catalyst for a probability shift, as such events routinely lower daytime highs by 3–5°C.

Sources: 1 · 2

Methodology

This page reviews Highest temperature in Shenzhen on July 20? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Kalshi vs Polymarket. 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

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.