Highest temperature in Milan on July 31?

Platform comparison

Market context

Polymarket has this contract at **0% YES** right now, so the market is pricing a sub-interval outcome at Malpensa as effectively off the board despite the fact that July in Milan is normally hot enough to reach the low 30s Celsius. The event settles on the **highest temperature recorded at Malpensa Airport on 31 July 2026**, with the result mapped to the market’s predefined Celsius bands and paid out in **USDC** via **Polygon** conditional tokens, so traders are really positioning around the day’s actual airport maximum rather than downtown Milan conditions.

The historical framing is straightforward: Milan’s July climate typically supports highs around **29–31°C**, with some sources putting the average July daytime high near **31°C** and others showing typical highs in the **mid-to-high 20s Celsius** depending on the station used.[2][7][10] Recent extreme-weather context matters as well, because Milan has already seen very severe summer heat, including a record **33°C daily average** at Milano Brera in 2023, which underlines how quickly forecasts can shift when heat builds over northern Italy.[17] For a Malpensa-based market, the airport location is important: it can run a touch cooler or warmer than central Milan depending on wind, cloud cover, and how much heat is trapped inland.

A trader watching this contract should focus on the afternoon forecast cycle, satellite/radar trends, and any late-day convection that could cap the airport’s high before the settlement window closes at **12:00 UTC**. The practical catalysts are the same ones that move a summer temperature book: updated model runs, storm timing, and whether the airmass stays dry and sunny long enough for the thermometer to push into the top band. If the market remains at zero, it is usually because the live forecast does not justify the upper bins rather than because the event is impossible.

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 PolyGram, 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

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.