Highest temperature in Guangzhou on July 7?

Platform comparison

Market context

Guangzhou is entering its peak summer heatwave, with the Baiyun International Airport station expected to record daily highs between 86°F and 100°F (30°C to 38°C) throughout July 2026[9]. The current 0% crowd-implied probability for a specific temperature range suggests traders are betting against an extreme outlier, yet historical data confirms July is the city’s hottest month, averaging 33°C (91°F) with high humidity[2]. Long-term averages show daytime maximums consistently hitting 33°C in July, accompanied by 16 days of rainfall and 227 mm of monthly precipitation, meaning heat spikes are often tempered by monsoon activity[4].

Traders must monitor the National Meteorological Centre’s daily thunderstorm warnings, as recent Yellow Warnings for heavy rain in the region could suppress peak temperatures despite the subtropical climate[5]. The resolution hinges on Wunderground’s recorded maximum for all times on 7 July, so any sudden shift in cloud cover or rain intensity will directly alter the outcome[1]. While the warmest day of July typically falls on 30 July with an average high of 32.2°C, the 7 July date remains within the extreme heat window where temperatures can surge to 34°C (93°F) under clear skies[3][6]. Watch for real-time updates on the Baiyun Airport station’s specific conditions, as local microclimates may deviate from the broader city forecast.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Guangzhou on July 7? 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 Prediction Today, 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

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 does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today 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.