TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 4, 11:59 PM EST
Kalshi
This event tracks whether unusually cold overnight temperatures occur across major U.S. cities on Independence Day 2026. A minimum temperature below 50°F would be exceptionally rare for early July in most American locations, indicating an anomalous weather pattern.
Resolution is determined by comparing the minimum temperature recorded in each city on July 4, 2026, against a 50°F threshold. Each city's outcome resolves to Yes if its minimum temperature falls below 50°F according to The Weather Company's official records. While other weather data sources such as AccuWeather or Google Weather may provide reference points for analysis, The Weather Company's reported minimum temperature serves as the authoritative and final data source for all resolution determinations. Temperature measurements are taken at the official weather station for each respective city.
Prediction market odds reflect aggregated trader expectations and often diverge from traditional weather forecasts issued by meteorologists and climate analysts. While meteorologists rely on physics-based models and historical data, prediction markets incorporate real-time information, trader expertise, and financial incentives to price outcomes accurately. Comparing this market's odds to published forecasts from the National Weather Service or independent meteorologists can reveal where traders believe consensus estimates may be underpricing or overpricing the likelihood of sub-50-degree temperatures on July 4. Such gaps sometimes signal emerging data or overlooked climate signals that professional forecasters have not yet fully weighted.
On Kalshi, this market is priced through a continuous order-book mechanism where buyers and sellers submit bids and offers for contracts tied to the outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders who believe minimum temperatures will dip below 50 degrees buy YES contracts, while those expecting temperatures to remain at or above 50 degrees buy NO contracts. The market price—expressed as a percentage between 0 and 100—reflects the collective probability estimate at any given moment. As new weather data, seasonal patterns, or climate models emerge, traders adjust their positions, causing the price to shift and revealing updated market sentiment about the likelihood of this specific temperature threshold being breached.
This market resolves around Jul 7, 2026, after July 4, 2026 has passed and the actual minimum temperature for that day can be verified. The outcome is determined by comparing the recorded minimum temperature on Independence Day to the 50-degree threshold specified in the market. Once credible public sources confirm the official temperature reading, the market settles: YES contracts pay out if the minimum is below 50 degrees, and NO contracts pay out if it is 50 degrees or higher. Traders should monitor official weather records and temperature databases in the days following the event to track the resolution process.
Several factors could shift odds in this market over the coming months. Seasonal climate patterns, El Niño or La Niña conditions, and long-range weather forecasts updated closer to July 4 will influence trader positioning. Major volcanic eruptions or unexpected atmospheric events could alter temperature expectations. Historical temperature data for July 4 in relevant regions, combined with climate model updates, may prompt repricing. Additionally, broader climate trends and any anomalous weather patterns observed in the months leading up to Independence Day could sway trader sentiment. As the event date approaches, increasingly precise meteorological forecasts will likely drive the most significant price movements in this market.