Highest temperature in Singapore on May 25?

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Market context

Singapore's equatorial climate produces consistently high temperatures year-round, with May typically among the warmest months before the onset of the southwest monsoon. Historical data from Changi Airport, the official meteorological station, shows May daily maxima regularly exceed 32°C, with readings frequently reaching 33–34°C during the afternoon peak. The 0% crowd probability suggests traders are either uncertain about the specific temperature bands offered or are awaiting clarity on the exact range thresholds that define settlement outcomes.

Changi Airport's long-term records provide the baseline for interpreting May 25th conditions. Over the past decade, May temperatures at this station have ranged from approximately 31°C to 35°C on individual days, with mean daily maxima around 32–33°C. Anomalously high readings above 35°C occur but remain uncommon; the station recorded its highest May temperature of 36.0°C in May 2016. These historical patterns suggest most outcomes will cluster in the 32–34°C range, though traders should account for inter-annual variability and the possibility of brief heat spikes during afternoon hours.

The settlement window closes at midday on May 25th, 2026, meaning traders must assess forecasts issued in the days preceding the date. Real-time weather monitoring from the Meteorological Service Singapore and updates from Wunderground's historical database will determine the final reading. Traders should monitor seasonal monsoon transition patterns and any anomalous atmospheric pressure systems developing in late May 2026, as these could drive temperatures toward the upper or lower bounds of historical May ranges.

Methodology

This page reviews Highest temperature in Singapore on May 25? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in 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.