Highest temperature in Shanghai on June 21?

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Market context

Shanghai Pudong International Airport is set up for a warm, potentially stormy afternoon, and the settlement source is the day’s *highest* reading at ZSPD rather than the evening temperature. Meteoblue is pointing to an afternoon mix of sunshine and clouds with local thunderstorms possible, a 60% precipitation chance, and temperatures as high as 81°F, which is about 27°C[1]. That puts the current 0% YES price in the context of a live forecast that is not especially cool by Shanghai standards, but still sits below the upper summer ranges that often decide this kind of market[1][4].

For a historical read, June at Pudong usually produces daily highs around 77°F to 83°F, with rare excursions above 92°F, and the broader airport climate profile says summer regularly gets above 30°C, sometimes reaching 35°C in very sunny spells[3][4]. WeatherSpark also classifies the hot season as running from mid-June through mid-September, so this date sits inside the statistically warmest stretch of the year[7]. For a trader building around bots or conditional orders, that means the practical question is not whether Shanghai is “hot”, but whether the observed airport maximum clears the relevant range band on the Wunderground page after any brief convective spike.

The main catalyst to watch is the evolution of cloud cover, rain timing, and thunderstorm development at and near the airport, because those are the variables most likely to cap or amplify the daytime peak. BBC Weather’s nearby Shanghai forecast also calls for thundery showers, a 28°C high, steady pressure, and a gentle breeze, which is consistent with a convective setup rather than a clean heat build-up[2]. In a programmatic workflow, the useful inputs are the latest airport forecast, live radar, and hourly updates ahead of local afternoon heating; if showers arrive early, the max can be truncated, while a delayed storm can leave room for a higher print before the window closes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Shanghai on June 21? 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 Polymarket Review UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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