Predicting the exact high temperature for a specific city on a given day is a relatively niche weather market. While easy to understand, it is highly specific and draws less mainstream attention than political or financial events.

May 4, 2026 - May 5, 2026, the price of 23°C skyrocketed from 10.65c to 57.8c. The reason is likely irrational buying driven by traders misinterpreting early morning low-temperature data. May 4, 2026 - May 5, 2026, the price of 25°C plunged from 44c to 11.5c, and '26°C or higher' plummeted from 46c to 5.5c, as real-time weather updates closer to resolution made it clear that reaching those higher temperatures is extremely unlikely.

The prediction market assigns a 58% probability to 23°C, whereas real-time weather data shows Guangzhou has already hit 24°C. This massive divergence likely stems from time zone confusion or lagging reactions to historical data, leading traders to price a physically impossible event as the favorite.

May 3, 2026 - May 5, 2026: The price of 16°C surged from 8.5c to a peak of 58.5c, as weather models grew increasingly confident that the high temperature would reach 16°C as the date approached. May 3, 2026 - May 5, 2026: The price of 14°C plummeted from 45.5c to 1.8c, because updated forecasts showed temperatures would be significantly higher than 14°C, effectively ruling out this option.

Between May 3 and May 4, 2026, the price of the 24°C option gradually climbed from 21c to 41.5c, and the 25°C option rose from 21c to 42c. This was driven by meteorological forecast models becoming increasingly confident that the high temperature will land in the 24-25°C range as the resolution date approaches, removing earlier uncertainties.

There is a noticeable divergence. The market currently assigns the highest probability (32.5%) to the 84-85°F range, whereas major meteorological sources, including the NWS and AccuWeather, forecast a high of 88°F. The market may be over-indexing on certain local forecasts that skew lower, or traders heavily weigh the potential for daytime showers to suppress the maximum temperature.

May 3, 2026 - May 4, 2026, the price of 14°C plummeted from 35.5c to 3c, while the prices for 15°C and 16°C surged. This was due to updated, higher-precision weather forecasts closer to the target date ruling out lower temperatures and revising the expected high upwards. May 1, 2026 - May 2, 2026, no other significant single-day moves exceeding 10 cents were observed in the past 3 days, though the overarching trend showed expectations slowly converging toward 15°C as meteorological data updated.