Highest temperature in Taipei on July 13?

Platform comparison

Market context

Taipei Songshan Airport is set to record its peak daily temperature for 13 July 2026, with the outcome determining the settlement of a weather prediction contract. While the specific market you referenced shows a 0% implied probability for a "YES" outcome, this likely stems from a binary framing mismatch; the active Polymarket for this event resolves to specific Celsius ranges rather than a simple yes/no, with 34°C currently the frontrunner at 39% and 35°C trailing at 35%[1]. This divergence highlights a critical discrepancy between a binary contract's zero probability and the broader market's strong consensus that temperatures will exceed 30°C.

Historical climate data frames these odds as statistically sound, given that July is the hottest month at Taipei Songshan, averaging a high of 92°F (33.3°C)[2]. Recent anomalies support the high-temperature thesis, with Taipei reaching a blistering 38.3°C in May 2026, marking the hottest day for that month since records began at the local station[7]. Traders comparing lines across platforms should note that while some binary markets may show flat odds, the range-specific markets consistently price the 34–35°C band as the most probable outcome, reflecting the region's typical mid-summer thermal ceiling.

Key catalysts for the final settlement include real-time atmospheric pressure shifts and cloud cover, which currently hover near 91% and could suppress peak heating[4]. The Central Weather Administration publishes hourly apparent temperature charts that traders must monitor, as sudden thunderstorm activity expected during the night and morning could alter the daily maximum[6]. With precipitation chances near 50% and winds shifting from the southeast, the final recorded temperature will depend heavily on whether afternoon skies clear to allow solar radiation to drive temperatures toward the 34°C consensus[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Taipei on July 13? 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 Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

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

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 Best Prediction Markets. 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.