Betting on the exact daily high temperature of a specific city is a niche weather derivative market. While not entirely uncommon in prediction markets, it is far from a mainstream topic of discussion.

April 19, 2026 - April 20, 2026, the price of '41°C' surged from 21c to 48.5c, as weather forecasts became clearer nearing the target date, making 41°C the most likely high temperature. April 19, 2026 - April 20, 2026, the price of '39°C' dropped from 14.5c (peak 19c) to 4.9c, due to generally warmer forecasts drastically reducing the likelihood of lower temperatures. April 19, 2026 - April 20, 2026, the price of '40°C' fluctuated between 29c and 44c, eventually settling at 33.5c, as the market reassessed probabilities between 40°C and 41°C. April 19, 2026 - April 20, 2026, the price of '38°C or below' crashed from 10.5c to 0.8c, reflecting the market's elimination of the probability of extremely low temperatures on the target date.

The rules clearly specify the data source (Wunderground for RJTT) and precision (whole degrees Celsius). A notable risk involves Wunderground's frontend Fahrenheit-to-Celsius conversion: due to rounding in the display or underlying data handling, certain whole-number Celsius temperatures might be skipped or misrepresented, potentially causing resolution disputes.

April 19, 2026 - April 20, 2026, the price of the 24°C option surged from 13.5c to 44.5c, as weather forecast data became more precise approaching the target date, significantly increasing market confidence in this temperature range. April 19, 2026 - April 20, 2026, the price of the 25°C option steadily rose from 10.5c to 28.5c, also reflecting a trend in forecasts leaning towards higher temperatures. April 19, 2026 - April 20, 2026, the prices for 20°C plummeted from 25.5c to 0.2c, 19°C from 20.5c to 0.45c, and 21°C from 23.5c to 0.45c, as short-term weather forecasts have virtually eliminated the possibility of such low high temperatures.

Moderate rule trap exists. The title implies total tweets, but the rules explicitly exclude most replies—which typically make up a large portion of Musk's activity. Furthermore, resolution heavily relies on a bespoke Polymarket tracker (xtracker). Users checking raw tweet counts directly on X will severely misjudge the outcome.

Highly exotic. Predicting the exact number of posts by a public figure in a specific future week is a hyper-niche, entertainment-focused novelty market. The general public would almost never ponder this question naturally.

April 19, 2026 - April 20, 2026, the 200-219 option surged from 8.6c to 17.55c, as the tweeting pace indicated a high likelihood of the final count landing in this lower range, prompting a market adjustment. April 19, 2026 - April 20, 2026, the 280-299 option plummeted from 19.5c to 9.5c, and the 300-319 option dropped from 13.5c to 5.5c, due to lagging tweet progress and time decay, reflecting normal linear projections based on real-time counts and liquidity reversion. April 18, 2026 - April 20, 2026, the price of the 220-239 option surged from 6.5c to 20.5c. The reason is that as the period progressed, Musk's actual posting frequency indicated a slower pace, prompting the market to significantly raise the probability of the final count landing in lower ranges.

The market heavily relies on a specific third-party tracker (xtracker). Technical risks exist regarding how replies and deleted posts are counted, especially if the scraper experiences downtime or fails to capture a post deleted within 5 minutes, leading to discrepancies.

Predicting the exact number of social media posts a politician makes in a specific week is a highly niche, novelty-driven market. General audiences rarely think about or track this specific metric.

April 18, 2026 - April 20, 2026: The price of the 180-199 option surged from 16c to 39.3c as posting volume continued at an extremely high rate, forcing the market to push the expected total well above 180 posts. April 18, 2026 - April 19, 2026: The price of the 200+ option continuously surged from 3.9c to 55.9c. This occurred because posting volume continued at an extremely high rate, forcing the market to push the expected total higher. April 18, 2026 - April 18, 2026: The price of the 160-179 option surged from 8.4c to 39.7c as the market initially projected the pacing to land here, but it subsequently dropped back to around 10c as even higher volumes materialized. April 17, 2026 - April 18, 2026: The 'Yes' prices for high-tier options like 160-179, 180-199, and 200+ surged significantly, while central brackets plummeted below 10c, because Trump posted at a significantly accelerated pace on the first day of the tracking period. April 14, 2026 - April 15, 2026: The 'Yes' prices for multiple outlier options plummeted from the 24-27c range down to under 5c, as the market corrected a previously massive overall probability premium, with arbitrageurs selling low-probability options.

Predicting the exact daily high temperature for a specific city is a standard meteorological task, but it remains a relatively niche and somewhat novel topic for general prediction markets compared to politics or finance.

Between April 19 and April 20, 2026, the price of '64°F or higher' plummeted from a peak of 94.5c to 64.5c, while '62-63°F' surged from a low of 2.75c to 24.55c. This was caused by updated weather forecasts indicating a high chance of rain and thunderstorms on April 21, which revised expected high temperatures downward from the 67-69°F range to around 64-66°F, significantly increasing the risk of falling short of the 64°F threshold.