Highest temperature in Milan on July 31?

Platform comparison

Market context

Milan’s late-July heat is the underlying event, and the market is effectively asking whether Malpensa Airport posts a top temperature that lands in the upper end of the usual summer band or nudges into an exceptional spike. With the crowd-implied probability at **0% YES**, the market is trading as a very strong favourite for a lower range, so the value case is on the underdog only if the day develops into a proper heat event rather than a routine warm one.[15][18]

The historical frame is straightforward: Milan’s July average high is around **29–30°C**, but the city’s record highs sit much higher, with sources showing July extremes around **38.1–38.2°C** and an all-time Milan high reported at **40°C on 30 July 2026**.[7][10][1] That puts the consensus near the centre of the distribution, while the tail risk sits in the high-30s rather than the low-30s; from a handicapper’s angle, that makes the favourite the cooler, more ordinary outcome and the contrarian angle the hot-day breakout. If traders are looking for value, they need either a forecast upgrade into a sustained hot spell or evidence that local conditions at Malpensa can outrun the broader Milan norm.[7][9][15]

The main catalysts are weather-signal driven rather than event-driven: the key dependency is the actual high recorded at Malpensa Airport before the market’s noon UTC settlement cut-off, so intraday updates matter more than headline city forecasts. Watch for any late adjustment in regional forecasts from major weather providers and for whether the heat from the previous day persists, since yesterday’s Milan reading already reached **40°C** in one history source, which would be the clearest reason to price up a repeat of the upper bands.[1][6][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Milan on July 31? 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 Who Will Win, which mirrors 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

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.

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 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.