Betting on the highest daily temperature in a specific city is a niche and somewhat novelty market type on prediction platforms. While the average person wouldn't normally try to predict this exact figure, it is not extremely bizarre.

Between April 4 and April 5, 2026, the price of 17°C surged from 24.5c to 35c, while 15°C plummeted from 36c to 16c. This was caused by the latest weather radars showing weaker cold air impacts as the settlement date approaches, shifting temperature expectations upward. Between April 2 and April 3, 2026, the price of the 15°C option surged from 17c to 31.5c, and the 16°C option jumped from 8.5c to 26c before settling at 23.5c. The 14°C, 17°C, and 18°C options also experienced wild swings of over 10c. This is primarily due to weather forecast models making frequent micro-adjustments regarding the expected high temperature as the date approaches, causing capital to quickly shift among adjacent temperature buckets.

Daily weather temperature predictions for a specific city are a relatively niche but somewhat common market type in certain prediction communities. While not as mainstream as elections or macroeconomic indicators, it is not an extremely bizarre or off-the-wall question.

April 4, 2026 - April 5, 2026, the price of the 6°C option surged from 6.5c to 26c, and 7°C steadily climbed to 38c, as the final 48-hour weather forecast models confirmed an incoming cold front, revising expected highs downwards. April 3, 2026 - April 4, 2026, the price of the 11°C option crashed from 25.5c to 4.5c, because the updated consensus ruled out the previously expected localized temperature bump. April 3, 2026 (15:30-17:40), the price of the 10°C option plummeted from 24c to 7.5c, as some weather forecasts revised the expected high temperature downwards, reducing the probability of reaching 10°C. April 3, 2026 (15:30-16:35), the price of the 11°C option surged from 19c to 25.5c, likely due to concentrated betting by traders relying on specific local meteorological models showing a temporary temperature bump.

Moderate risk. The title broadly says 'San Francisco', but the rules strictly specify using the 'San Francisco International Airport Station (KSFO)' data from Wunderground. Because the airport is located near the bay, its microclimate often produces temperatures noticeably different from downtown SF. Users who rely on generic weather forecasts without checking the specific station are highly likely to be misled.

April 4, 2026 15:20 - April 5, 2026 07:35: The '60-61°F' Yes price surged from 3c to 22c, as near-term weather models revised the expected high temperature downwards. April 3, 2026 01:25 - April 5, 2026 04:20: The '66-67°F' Yes price plummeted from 31c to 6c, reflecting updated meteorological data ruling out this warmer range. April 3, 2026 06:50 - April 3, 2026 11:10: The '74°F or higher' Yes price crashed from roughly 24c down to 5c, reflecting updated weather models ruling out extreme heat for that day. April 2, 2026 11:20 - April 3, 2026 00:20: The '64-65°F' Yes price climbed steadily from 9.5c to 23.5c, indicating growing market confidence in this temperature range.

April 4, 2026 - April 5, 2026, the price of 70-71°F surged from 26c to 39.5c, while '78°F or higher' plummeted from 20.9c to 7.25c. This was due to the approaching resolution date and the latest weather models converging to lock the high temperature near 70°F, completely ruling out extreme heat scenarios. April 3, 2026, the price for 68-69°F surged from 12.5c to 26c, and 76-77°F spiked from 7c to 18.9c, while '78°F or higher' plummeted from 15.9c to 4c. This was caused by the latest weather model runs updating during the day, ruling out extreme heat scenarios and shifting the expected temperature consensus into the 68-71°F range, with some models showing a secondary spike near 76°F.