While predicting the exact daily high temperature of a specific city is a niche topic for the general public, weather derivatives are a relatively standard category within prediction markets.

April 3, 2026 - April 4, 2026, the price of the 19°C option surged from 21c to 31c before retreating to 24.5c, due to fluctuations in short-range weather models regarding daytime highs under rainy conditions. April 2, 2026 - April 3, 2026, the price of the 18°C option rose from 15.5c to 21c and then fell to 11c, as updated forecast models indicated rain might arrive earlier, strengthening cooling expectations before uncertainty recalibrated the odds. April 2, 2026 - April 3, 2026, prices for the 20°C and 21°C options experienced wide swings of over 10c (e.g., 21°C jumping from 9.5c to 25.5c), triggered by speculative trading following minor adjustments to cloud cover and wind direction projections.

The market's implied probability for higher temperatures (combining 20°C and 21°C at roughly 44.5%) is significantly warmer than the mainstream weather forecast consensus. Current models from Wunderground and AccuWeather project highs of only 65°F-66°F (approx. 18.3°C-18.9°C) with rain. This divergence likely reflects traders hedging against potential forecast errors, anticipating that delayed rainfall could allow for unexpected daytime heating.