TL;DR
A betting platform has introduced a market estimating a 10% probability that Shanghai’s lowest temperature will be 24°C on July 18. No official weather forecast has confirmed this prediction, which remains speculative.
There is currently no official weather forecast confirming that Shanghai will experience a lowest temperature of 24°C on July 18. A betting platform, Polymarket, has introduced a market assigning a 10% probability to this event, sparking curiosity about the accuracy of such predictions and the actual weather outlook. For example, you can check Shanghai’s temperature forecast.
As of now, meteorological agencies in Shanghai have not issued any forecast indicating that the lowest temperature on July 18 will reach 24°C. You can also see the forecast for Seoul here. The city’s weather service reports typical summer temperature ranges but does not specify such precise low-temperature predictions. The 10% figure originates from a betting market on Polymarket, which allows users to wager on various weather outcomes based on collective speculation.
Polymarket’s new market was listed recently, and its 10% probability is based on collective user predictions rather than meteorological data. Experts caution that such markets are speculative and should not be considered reliable forecasts. Weather forecasts from official sources, like the Shanghai Meteorological Bureau, remain pending or unchanged at this time.
Implications of Betting Markets on Weather Predictions
This development highlights how betting platforms are increasingly used to gauge public sentiment or speculation about weather events, though they are not substitutes for official forecasts. For residents and businesses in Shanghai, relying on verified meteorological data remains essential for planning. The 10% figure from Polymarket does not reflect an official forecast and should be interpreted as a speculative estimate rather than a prediction.

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Recent Weather Trends and Forecasting in Shanghai
Shanghai experiences hot and humid summers, with typical lows ranging from 25°C to 28°C during July. Official weather forecasts issued by the Shanghai Meteorological Bureau focus on broader temperature ranges and weather patterns rather than specific low temperatures on particular days. Historically, summer nights rarely see lows as low as 24°C, making such a prediction unusual without official confirmation.
The introduction of a betting market predicting a 24°C low is part of a broader trend where non-official platforms attempt to interpret or speculate on weather outcomes. Meteorologists emphasize that accurate weather predictions are based on detailed atmospheric data, which is not publicly available through betting markets.
As of now, no official forecast has been issued for July 18, and weather models continue to project typical summer temperatures for Shanghai.
“We have not issued any forecast indicating a low temperature of 24°C for July 18. Residents should rely on official updates for accurate weather information.”
— Shanghai Meteorological Bureau
Unconfirmed Nature of the 24°C Low Prediction
It remains unclear whether any meteorological models or official forecasts support the possibility of a 24°C low in Shanghai on July 18. The current weather outlook does not specify such a low, and the prediction from Polymarket is based solely on collective betting rather than scientific data. As of now, no official agencies have endorsed or predicted this temperature level.
Monitoring Official Forecasts and Market Developments
Weather authorities in Shanghai are expected to release updated forecasts closer to July 18. The betting market on Polymarket will likely continue to fluctuate based on new data or public sentiment. Residents should follow official sources for accurate weather information and treat betting market estimates as speculative.
Key Questions
Has the Shanghai weather bureau officially predicted a 24°C low for July 18?
No, the Shanghai Meteorological Bureau has not issued any forecast predicting a low temperature of 24°C on that date.
What is the basis for the 10% probability in the Polymarket betting market?
The 10% figure is based on collective user predictions and does not rely on official meteorological data. It reflects market speculation rather than scientific forecasting.
Should residents rely on betting markets for weather predictions?
No, betting markets are speculative and should not replace official weather forecasts from meteorological agencies.
How accurate are weather predictions for specific low temperatures?
Weather forecasts focus on broader temperature ranges and weather patterns. Precise low-temperature predictions are challenging and typically available only through detailed models close to the date.
When will the official forecast for July 18 be available?
The Shanghai Meteorological Bureau usually releases updated forecasts a few days before the date in question, so residents should check official channels for the latest information.
Source: polymarket