Highest temperature in Taipei on July 20?

Platform comparison

Market context

Taipei Songshan Airport is set to record its peak July heat on 20 July 2026, with the market currently pricing a 0% chance for any outcome other than the implied frontrunner. Historical climatology for Taipei in July shows daytime temperatures typically ranging between 32°C and 38°C, with six hours of daily sunshine creating conditions for sustained high heat [2]. While the average July high sits near 33°C, days with reduced cloud cover or delayed thunderstorms frequently push readings 2–3°C higher, making the 35–36°C band the statistical favourite [1]. The current crowd-implied probability of 0% YES suggests the market has locked in 35°C as the near-certain outcome, leaving little room for contrarian value unless a significant weather anomaly disrupts the seasonal pattern.

Traders should monitor real-time precipitation forecasts for the Taipei region, as an 80% chance of precipitation could suppress temperatures well below the consensus range [3]. The primary catalyst is the timing of afternoon thunderstorms, which are common in July and can drop peak temperatures by several degrees if they arrive before the daily maximum is reached. No specific announcements are scheduled, but the dependency on cloud cover and storm timing means the market remains vulnerable to rapid shifts if Wunderground data shows a deviation from the typical 35°C trajectory. Value may sit in the underdog outcomes if forecast models indicate a wetter day than the current dry consensus assumes, though the narrow spread between typical and extreme July heat limits the upside for contrarian positions.

Sources: 1 · 2 · 3

Methodology

We track Highest temperature in Taipei on July 20? 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

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 Who Will Win 2026. 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.

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.