Predicting the exact daily high temperature in a specific city on a given day is a highly niche weather derivatives market. Unless someone is a local resident or a specialized weather trader, the general public would not naturally consider or care about this question, making it quite a novelty.

April 15, 2026 - April 16, 2026, the price of 40°C surged from 20.5c to 49.5c as weather forecasts stabilized, confirming the high would be near 104°F (40°C). April 15, 2026 - April 16, 2026, the price of 42°C plummeted from 26c to 2c as new data ruled out the likelihood of reaching this extreme heat. April 15, 2026 - April 16, 2026, the price of 39°C fluctuated significantly between 11.5c and 32c, reflecting shifting market expectations on whether the temperature might fall slightly short of 40°C.

The market pricing is significantly disconnected from current weather forecasts. The prediction market assigns the highest probability to the 82-85°F range, whereas recent public weather forecasts project rain and a significant cooldown on April 18, with highs only reaching around 71-72°F. This divergence is likely due to the market's failure to digest the latest cold front forecast [3, 6].

The market prices 29°C as the favorite (32c), but mainstream weather forecasts (e.g., Google and AccuWeather) predict a high of 80°F (approx. 27°C). The market is significantly overestimating the likelihood of an unusually high temperature, showing a clear divergence.

April 16, 2026 - April 17, 2026, the price of the 18°C option surged from 38.5c to 99.7c, while the 19°C option dropped to 0.2c. This was due to actual meteorological observations on April 17 confirming a peak temperature of 18°C, bringing certainty to the market. April 15, 2026 - April 16, 2026, the price of the 19°C option increased from 25.5c to 37.5c, while the 17°C option dropped from 24c to 13c. This was due to updated meteorological models revising the expected high temperature upwards, shifting the expected temperature center from 17°C-18°C to 18°C-19°C.

April 16, 2026 - April 17, 2026, the price of 18°C steadily climbed from 31.5c to 53.5c, while the price of 17°C dropped significantly from 44.5c to 24.5c. This occurred because, as time progressed, the latest high-resolution weather models further anchored the expected peak temperature at 18°C, reducing the likelihood of a cooler peak. April 16, 2026 - April 17, 2026, the price of 16°C plummeted from 13.2c to 1.5c, as morning real-time temperatures and short-term forecasts definitively ruled out the scenario where the high would only reach 16°C.