Highest temperature in Guangzhou on July 1?

Platform comparison

Market context

Guangzhou is bracing for its hottest period of the year, yet the market currently assigns a 0% probability to any temperature outcome, a stark contradiction to the region’s typical July heat. This zero-odds stance likely reflects a temporary liquidity freeze or a data glitch rather than a genuine belief that temperatures will be absent, as historical records confirm July is the city’s peak thermal month.

Historically, Guangzhou’s July highs consistently range between 31.5°C and 39°C, with averages hovering around 33°C to 35°C[2][3][4]. The market’s frontrunner on other platforms sits at 35°C with a 38% probability, reinforcing that temperatures in this range are the statistical norm rather than an anomaly[1]. A 0% probability for all outcomes is therefore inconsistent with decades of meteorological data showing daily highs rarely falling below 31°C or exceeding 39°C during this window[2][7].

Traders should monitor the arrival of typhoons or heavy rain systems, which frequently disrupt July heatwaves and can temporarily lower temperatures below 30°C[4][6]. The National Climate Centre has recently flagged increased typhoon activity for the South China coast in early July, a key dependency that could shift the resolution source if a storm hits the Baiyun Airport station on 1 July[9]. Additionally, watch for real-time Wunderground updates, as the resolution source is strictly tied to the highest recorded temperature at that specific station, making local micro-climate shifts critical[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Guangzhou on July 1? 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.