How many days will Denver be above 90°F?

Comparing prediction market odds to analyst forecasts reveals interesting insights into collective intelligence. While traditional weather analysts provide forecasts based on models and data, this market represents the aggregated predictions of a diverse group of traders. If analysts predict a high probability of Denver experiencing multiple 90°F days, we might expect to see the price of this market increase, indicating a similar belief among traders. Conversely, if the market price remains low despite favorable analyst predictions, it suggests traders may have different information or a more skeptical outlook. It’s a fascinating way to see how crowd wisdom stacks up against expert opinions.

On Kalshi, this market is priced using a continuous double auction, meaning traders buy and sell contracts representing the probability of the event occurring. The price fluctuates based on supply and demand; if more people buy contracts, the price rises, and vice versa. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. This dynamic pricing mechanism reflects the evolving beliefs of the market participants. A price of 50 represents a 50% probability, while a price of 80 indicates an 80% probability. Traders aim to profit by accurately predicting the outcome and capitalizing on price discrepancies.

This market resolves around Sep 15, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the resolution will depend on publicly available temperature data from Denver, Colorado, during the week of September 7, 2026. The number of consecutive days with an average temperature exceeding 90°F will be the determining factor. The outcome will be based on established meteorological records and reporting, ensuring a transparent and objective assessment of whether the event occurred as defined by the market.

Several signals could influence the price of this market leading up to Sep 15, 2026. Long-range weather forecasts, particularly those predicting above-average temperatures for the Denver area, would likely increase the price. Conversely, forecasts indicating cooler-than-normal conditions could drive it down. Major weather events, such as a heatwave impacting other parts of the country, might also influence trader sentiment. Additionally, any news regarding climate change trends or unusual atmospheric patterns could play a role, as traders incorporate new information into their predictions about the likelihood of sustained high temperatures in Denver.