Highest temperature in Milan on August 20?

Platform comparison

Market context

The market is pricing zero probability that Milan's highest temperature on 20 August 2026 will exceed the upper bound of whichever range resolves. This 0% YES reading reflects either extreme confidence in a specific temperature band or, more likely, thin liquidity and minimal trading activity on a niche weather contract. The settlement hinges on Wunderground's Daily Observations table for Malpensa International Airport—the primary weather station serving the Milan metropolitan area—rather than summary figures, a distinction that matters when intraday readings diverge from headline highs.

Milan's August temperatures have historically clustered between 28–32°C, with occasional peaks above 35°C during heat waves. The city experienced 37.5°C on 11 August 2021 and 36.2°C on 15 August 2023, establishing that extreme readings are plausible but not routine. The current 0% probability suggests traders expect a moderately warm day rather than an exceptional one, though the contract's granularity—presumably divided into 2–3°C bands—means the crowd is effectively betting against outlier heat. Historical August variability across northern Italy typically spans 8–10°C between cool and hot scenarios, leaving substantial room for movement once forecasts solidify in summer 2026.

European summer weather patterns remain difficult to predict beyond six weeks, but traders should monitor late-July forecasts from ECMWF and GFS models, which typically show skill for the following month. Any significant heat dome developing across southern Europe in early-to-mid August would shift expectations sharply. Malpensa's elevation (224 metres) and proximity to the Alps moderates extreme heat compared to inland Lombardy, a factor that historically suppresses the highest possible readings relative to regional records.

Methodology

This page reviews Highest temperature in Milan on August 20? 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 Polymarket Scam?, 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.

UK Frequently Asked Questions

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