$53.31K
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$53.31K
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Trader mode: Actionable analysis for identifying opportunities and edge
This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 1 Mar '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD. To
Prediction markets currently give a 100% chance that Chicago's high temperature on February 27 will be 53 degrees Fahrenheit or below. In practical terms, traders are completely certain the day will not be unseasonably warm. The leading forecast from the National Weather Service for that date is a high of 38 degrees, which falls well within this expected range.
Two main factors explain this near-certain prediction. First, the date falls squarely in Chicago's climatological winter. The average high temperature in late February is typically in the upper 30s. A reading above 53 degrees would be a significant outlier, roughly 15 degrees warmer than normal.
Second, reliable weather models are already in strong agreement for this short-term forecast. As of now, no major atmospheric patterns, like a strong southerly wind flow or a pronounced "ridge" of high pressure, are predicted to develop that could pump unusually warm air into the Midwest on that specific day. The market reflects high confidence in these stable model projections for the immediate forecast window.
The main event is the day itself, February 27, when the official high temperature will be recorded at O'Hare Airport. Since this is a very short-term weather forecast, the window for the prediction to change is narrow. The primary signal to watch would be a major shift in the forecast models within about 3-5 days of the date. If a new model run suddenly projected a strong warm front, the market probability could theoretically shift, though that is now considered extremely unlikely.
For short-term weather forecasts like this, prediction markets often align closely with professional meteorological consensus. When high confidence exists in weather models just a few days out, markets tend to be accurate. The main limitation here is the inherent small chance of a rapid, unpredicted weather change. However, the market's 100% probability indicates traders see that risk as negligible, effectively betting that a dramatic last-minute forecast reversal won't happen.
The Polymarket contract "Will the highest temperature in Chicago be 53°F or below on February 27?" is trading at 100 cents, or a 100% probability. This price indicates the market is completely certain the temperature did not exceed 53°F. With over $172,000 in total volume across related temperature contracts, this specific binary outcome has attracted significant, decisive betting. The market has resolved or is imminently resolving based on finalized data from Wunderground for Chicago O'Hare International Airport.
The 100% price is not a forecast but a confirmation of a known outcome. February 27 has passed, and the actual high temperature for the date is publicly verifiable. Prediction markets for weather events see this pattern routinely. Once the observation period ends and reliable data sources like Wunderground publish official readings, markets converge rapidly to 0% or 100%. The high volume suggests active trading occurred as forecasts evolved in the days leading up to the 27th, but all uncertainty has been eliminated by the arrival of the definitive meteorological record.
Nothing can change the odds for this specific date. The event is historically settled. For analogous live weather markets, odds shift with updated forecast models from agencies like the National Weather Service. A predicted winter warm spell could see odds for a "above 53°F" outcome increase sharply, while a reinforcing Arctic air mass would solidify bets on a colder resolution. The key lesson from this resolved market is that liquidity and interest are high for measurable, short-term weather outcomes in major cities, but all volatility ceases the moment official data is available.
AI-generated analysis based on market data. Not financial advice.
This prediction market focuses on forecasting the highest temperature recorded at Chicago O'Hare International Airport on March 1, 2026. The market resolves based on data from Weather Underground's historical records for the official weather station at O'Hare (KORD), which the National Weather Service recognizes as the primary climate observation site for Chicago. Participants are essentially betting on which temperature range will contain the official daily high, offering a quantifiable test of meteorological prediction skill and public intuition about early spring weather in the Midwest. Interest in such markets extends beyond casual weather watching. They provide a financial mechanism for hedging against weather-sensitive industries, from agriculture to event planning, and serve as a collective intelligence tool that can sometimes outperform standard forecast models. The specific date of March 1 is significant as it falls during a period of high climatic variability for Chicago, where historical records show temperatures can swing from sub-freezing to unseasonably warm, making accurate prediction challenging. The market's resolution source, Weather Underground, aggregates data from automated sensors at O'Hare, providing an objective, timestamped record that minimizes human error in measurement.
Chicago's official weather records have been kept at O'Hare International Airport since 1959, providing over six decades of consistent data for March 1. The historical extremes for this date are stark. The record high is 74 degrees Fahrenheit, set in 1972. The record low is -6 degrees Fahrenheit, recorded in 1962. This 80-degree spread illustrates the immense variability possible on this calendar day. In the 30-year climate normal period from 1991 to 2020, the average high temperature for March 1 in Chicago is 40 degrees Fahrenheit. However, the trend in recent decades has been toward warmer conditions. An analysis by the Midwestern Regional Climate Center shows that Chicago's average winter and early spring temperatures have increased by approximately 3 degrees Fahrenheit since 1970. This warming trend has made extremely cold March days less frequent, but it has not eliminated the potential for late-season arctic outbreaks, which can still occur due to disruptions in the polar vortex. The year 2012 provides a notable recent precedent, when a historic warm spell in March saw temperatures reach 70 degrees or higher on multiple days, shattering records.
The outcome of this specific temperature prediction has tangible economic implications. A significantly warmer-than-average March 1 can reduce heating demand for natural gas, affecting energy markets and utility company revenues. It can also allow for an earlier start to construction seasons and influence retail sales of spring merchandise. Conversely, a cold day can extend the demand for winter services and delay agricultural activity in the surrounding region. On a broader scale, markets like this contribute to the growing field of climate risk assessment. They create a financial instrument tied to a specific weather outcome, allowing businesses to hedge against volumetric risk caused by temperature fluctuations. The aggregated predictions can also be analyzed as a measure of public perception regarding climate trends and forecast accuracy. For meteorology, the collective wisdom of prediction markets is sometimes compared to operational forecast models, providing an alternative gauge of uncertainty and confidence in weather predictions several years in advance.
As of late 2024, the long-range climate outlook for the winter of 2025-2026 remains highly uncertain. The El Niño-Southern Oscillation is in a neutral phase, and predictions for its state 12-18 months in advance have low skill. The Climate Prediction Center's official outlooks for March 2026 will not be issued until late 2025. Current scientific attention is focused on monitoring sea surface temperature patterns in the Pacific and Atlantic, which will eventually influence the seasonal forecasts that market participants will use. The most recent complete year of data, 2023, saw a March 1 high temperature of 46°F at O'Hare, which was 6 degrees above the 1991-2020 normal.
Chicago's official climate data comes from the Automated Surface Observing System at O'Hare International Airport, designated as station KORD. This station replaced Midway Airport as the official site in 1959. Weather Underground sources its data for resolution from this same station.
Specific daily temperature forecasts years in advance are impossible. However, seasonal outlooks can indicate probabilities for above or below average temperatures for a month. For March 2026, the first skillful seasonal forecasts will be issued in late 2025, based on ocean patterns like ENSO.
Yes. Data from NOAA shows Chicago's average winter and early spring temperatures have warmed by about 3 degrees Fahrenheit since 1970. This has increased the frequency of warm March days and decreased the frequency of extreme cold snaps, shifting the statistical odds for a day like March 1.
The highest temperature on a given day usually occurs in the mid-to-late afternoon, typically between 2 PM and 5 PM local time. The official daily high is the maximum reading from the midnight-to-midnight period, regardless of when it was recorded.
O'Hare Airport is located on the northwestern edge of the urban area, which somewhat insulates it from the strongest core of Chicago's urban heat island. However, regional urbanization has still contributed to a warming trend in the long-term climate record compared to more rural stations.
Educational content is AI-generated and sourced from Wikipedia. It should not be considered financial advice.
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| Poly | 41% |
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