Highest temperature in Singapore on July 27?

Platform comparison

Market context

Singapore’s hottest reading at Changi on 27 July will decide this market, with settlement tied to the day’s maximum temperature from Wunderground rather than any national forecast. The crowd is currently split most heavily between **31°C** and **30°C**, at **35%** and **32%** respectively, while the contract’s **0% YES** headline suggests the market is not pricing a single binary outcome but a wider set of temperature bands that still leaves the exact settlement range unresolved.[1]

That distribution fits Singapore’s July climatology, where temperatures are usually tightly clustered rather than extreme. Holiday-weather’s July averages point to a wet monsoon-period backdrop, with about **150 mm** of rainfall across **19 days**, which matters because cloud cover and showers often cap daytime heating even when humidity is high.[2] In practical terms, traders should read the pricing as a bet on whether Singapore reaches the low-30s rather than a call on anything unusual; for this contract, that means the difference between **30°C** and **31°C** is more important than the broader seasonal norm.[1][2]

The main catalysts are the day’s live weather evolution at Changi, especially any afternoon convective showers, sea-breeze effects, and cloud breaks that can shift the peak by a degree or two before the settlement window closes. There are no sportsbook-style lines in the source set here, so the meaningful comparison is between the market’s current skew to **31°C/30°C** and the broader July baseline that implies a fairly narrow distribution around the low 30s.[1][2]

Sources: 1 · 2

Methodology

This page reviews Highest temperature in Singapore on July 27? 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

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'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 Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.