Highest temperature in Shenzhen on July 10?

Platform comparison

Market context

Shenzhen faces its peak summer heat on 10 July 2026, with the Shenzhen Bao’an International Airport Station expected to record daily highs near 32°C. The prediction market currently assigns a 0% implied probability to the “YES” outcome, suggesting the crowd believes the temperature will fall outside the specified range. This stark consensus contrasts with historical patterns where July routinely delivers highs between 30°C and 33°C at this location, making the zero probability an outlier against typical seasonal behaviour[2][5].

Historical data shows July is the hottest month in Shenzhen, with average highs of 89°F (31.7°C) and frequent peaks reaching 90°F (32.2°C) or higher[2]. Comparable cases from recent years indicate that temperatures below 30°C are uncommon during mid-July, while extremes above 34°C are rare but possible during heatwaves. The current 0% line implies a significant divergence from these norms, potentially reflecting a specific range definition that excludes the typical 31–33°C band rather than a genuine expectation of cold weather[5][9].

Traders should monitor real-time updates from Wunderground, the official resolution source, and watch for any sudden shifts in cloud cover or precipitation that could suppress temperatures. Recent forecasts for the area indicate light rain and mostly cloudy conditions on 10 July, which may cap highs near 31°C rather than the usual 33°C peak[3][4]. A divergence between this market’s 0% line and sportsbook or analyst consensus on similar weather contracts would signal either a mispriced range or a unique market-specific bias worth investigating.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Shenzhen on July 10? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

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.

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.

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.