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: Jun 30, 11:59 PM EST
Kalshi
This event group asks whether New York City will experience precipitation in June 2026. However, the two platforms define the question differently: Kalshi measures precipitation in Miami (not NYC), while Polymarket measures precipitation in NYC's Central Park. This creates a fundamental geographic divergence that makes direct comparison impossible.
This market will resolve according to the total precipitation in inches in Central Park, New York City between June 1 and June 30, 2026, 11:59PM ET according to the National Oceanic and Atmospheric Administration (NOAA). If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. The resolution source for this market will be NOAA, specifically the figure for June 2026 when the "Monthly summarized data" for "Central Park NY" is selected with the variable set to "Precipitation" at the https://www.weather.gov/wrh/climate?wfo=okx link once that figure is finalized for the whole month of June 2026. The resolution source for this market measures precipitation to 2 decimal places (e.g., 1.54), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution is determined by total precipitation at CLIMIA in Miami during June 2026, measured against seven escalating thresholds: strictly greater than 1 inch, 2 inches, 3 inches, 4 inches, 5 inches, 6 inches, or 7 inches. Official data comes from the National Weather Service Climatological Report (Daily) accessible via the Miami NWS office website, navigating to the Observed Weather tab and selecting Miami, FL with Daily Climate Report. Traders should rely on the final NWS Climatological Report rather than preliminary reports or third-party weather services, as measurement methods and rounding conventions may affect reported values. Data updates occur at varying frequencies depending on reporting schedules.
Prediction market odds reflect real-money consensus from traders on Polymarket and Kalshi, while meteorological forecasts come from models and expert analysis. Markets often incorporate broader information—including long-range climate patterns, historical June rainfall in NYC, and trader positioning—that may diverge from single-model predictions. Comparing the two reveals whether traders are pricing in more or less precipitation risk than official forecasts suggest, offering insight into market sentiment versus institutional guidance.
Key catalysts include updated seasonal climate forecasts, historical June rainfall patterns, El Niño or La Niña conditions, and real-time weather models as June approaches. Tropical storm activity, jet-stream positioning, and Atlantic hurricane season development can all influence precipitation odds. Additionally, early June rainfall will provide concrete data that traders incorporate into their positions, causing sharp repricing. Monitor National Weather Service updates and long-range outlooks for signals that may shift market consensus on NYC precipitation likelihood.