Highest temperature in Shenzhen on July 10?

Platform comparison

Market context

Shenzhen’s July climate is defined by intense subtropical heat, with historical averages for 10 July showing a typical high of 33°C and a monthly mean peak of 32°C[1][2]. The current crowd-implied probability of 0% YES suggests the market expects the temperature to fall outside the lowest betting range, yet this contradicts decades of data where readings below 29°C are exceptionally rare in mid-summer[10]. Historical patterns frame the 0% line as a severe underdog position; the consensus appears to be mispricing the likelihood of a cool anomaly, while value likely sits on the contrarian angle that extreme heat will persist, pushing the temperature well above the lowest threshold.

Traders should monitor the subtropical high pressure system and incoming typhoon activity, which are the primary catalysts for temperature volatility in Shenzhen during July[1]. While typhoons can temporarily suppress heat, the dominant trend remains scorching conditions, with recent records showing temperatures exceeding 40°C in southeastern China since early July[8]. No specific weather announcements are scheduled for 10 July, but the dependency on the Wunderground record from Shenzhen Bao’an International Airport Station means traders must watch real-time hourly updates for that specific station[9]. The settlement window ending 2026-07-10T12:00:00Z captures the full day’s peak, making the 0% probability a high-risk bet against the overwhelming historical evidence of July heat.

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

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

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 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 Who Will Win 2026 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.