TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 13, 1:00 AM EST
Kalshi
This event group asks what the lowest temperature will be in New York City on June 13, 2026. Kalshi and Polymarket both reference official weather data sources (National Weather Service and Wunderground respectively) to determine which temperature range the daily low will fall into. The markets collectively cover temperature ranges from 63°F and below up to 82°F and higher.
This market will resolve to the temperature range that contains the lowest temperature recorded at the LaGuardia Airport Station in degrees Fahrenheit on 13 Jun '26. The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the LaGuardia Airport Station, available here: https://www.wunderground.com/history/daily/us/ny/new-york-city/KLGA. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution is based on the minimum temperature recorded at New York City on June 12, 2026, as reported in the National Weather Service's Climatological Report (Daily) for Central Park, NY. The official data source is accessed via the NWS New York office website under the Observed Weather tab. Temperature bands are: 68°F or below, 69-70°F, 71-72°F, 73-74°F, 75-76°F, and 77°F or above. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) serves as the authoritative source, superseding other weather services.
Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform attracts different trader demographics, liquidity pools, and risk appetites. Kalshi's binary structure encourages yes-or-no positioning on specific thresholds, while Polymarket's outcome granularity allows traders to bet on narrow temperature ranges. Differences in fee structures, user interface design, and market-making incentives can also cause temporary price spreads. These gaps typically narrow as arbitrageurs exploit mispricings, but they persist when liquidity is thin or when traders on one platform hold stronger convictions than the other.
Major weather model updates, tropical system forecasts, and upper-atmosphere pattern shifts can trigger sharp repricing in this market. Seasonal climate anomalies, sudden jet-stream changes, or revised ensemble guidance from the National Weather Service often spark trading surges. Real-time atmospheric observations in the 48 hours before June 13 typically drive the largest moves, as uncertainty collapses and traders adjust positions based on the most current data. Breaking news about blocking patterns or frontal systems can also shift odds significantly.