TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: May 30, 2:00 AM EST
Kalshi
This market tracks whether Chicago's overnight low temperature will fall within the 53-54° Fahrenheit range on May 29, 2026. On Kalshi, the leading outcome carries a 32.0% probability, while a 55-56° low registers at 30.0%. Resolution will be determined by the National Weather Service's Climatological Report (Daily) for that date. Watch the National Weather Service's forecast updates as May 29, 2026 approaches to gauge shifts in expected overnight conditions.
The market resolves on May 30, 2026, after the lowest temperature for May 29, 2026 in Chicago is officially recorded. The outcome is determined by the actual low temperature observed on that date, measured by the designated weather station or official source specified in the contract terms. Once the data is published and verified, the market settles automatically and traders receive payouts based on which outcome bracket or threshold their position matched. Early resolution is not expected unless extraordinary circumstances prevent standard temperature reporting.
Major weather pattern shifts, seasonal climate anomalies, and updated long-range forecasts from the National Weather Service can significantly move odds for Chicago's May 29 low. Tropical systems, polar vortex disruptions, or persistent high-pressure systems weeks in advance may alter trader expectations. Real-time model consensus changes in early May will likely trigger sharp repricing as the event date approaches. Historical temperature records for late May in Chicago also anchor trader priors. Media coverage of unusual spring weather or climate events may shift retail trader participation, adding volatility to the market price independent of meteorological fundamentals.