Highest temperature in Milan on July 31?

Platform comparison

Market context

Milan’s late-July temperature market is effectively a bet on whether the city gets a clean, hot afternoon at Malpensa or loses the upside to cloud, convection, or a sea-breeze-influenced pattern. July is normally Milan’s warmest month, with average daytime highs around 28.6–29°C, but the city has a much higher historical ceiling, including a record monthly high of 38.8°C and July records above 38°C in long-run climate tables.[6][14][5]

The current 0% YES implies the market is leaning heavily away from an exceptional heat spike and towards a more ordinary summer outcome. That framing matters because Milan can still run hot even when the broader seasonal average is modest: one historical July compilation puts the average high at 29.2°C, while the monthly record high is 38.1°C, showing how far a single day can deviate if a heat dome builds over northern Italy.[5][11] Comparable extremes have been concentrated in major Italian heatwaves, including the 2023 episode in which Milan reached a new record average daily temperature, underlining that the upper tail exists but usually requires a strong synoptic trigger.[17][19]

For traders, the key catalyst is the weather set-up over northern Italy rather than any scheduled event: forecasts for the Po Valley, humidity, wind direction, and thunderstorm risk will matter more than local headlines. The important dependency is whether a hot air mass holds through the midday-to-afternoon window before the market’s 12:00 UTC settlement cutoff, because the contract resolves on the day’s highest temperature at Malpensa rather than on a citywide average.[2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Milan on July 31? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.