TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 28, 1:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Philadelphia on June 27, 2026. The outcome will be determined by the official National Weather Service daily climatological report for Philadelphia, which measures the minimum temperature reached during that calendar day.
Resolution is based on the minimum temperature recorded at Philadelphia, Pennsylvania on June 27, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS Eastern Region Climate portal by selecting the Philadelphia, PA location with Daily Climate Report. The minimum temperature is divided into six distinct ranges: 62°F or below, 63-64°F, 65-66°F, 67-68°F, 69-70°F, and 71°F or above. Each range corresponds to a separate market outcome. 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 or preliminary reports.
Prediction market odds reflect real-money incentives for accuracy, often incorporating meteorological forecasts, historical climate patterns, and emerging weather models faster than traditional analyst consensus. While professional weather services publish seasonal and extended-range forecasts, this market aggregates trader beliefs into a single probability, updated continuously as new information arrives. Comparing the two reveals whether the crowd is pricing in more or less risk than official forecasters—a useful cross-check for understanding where uncertainty lies in long-range temperature prediction.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the collective willingness of traders to risk capital on that result, with tighter spreads indicating higher confidence and wider spreads signaling disagreement. As new weather data or seasonal patterns emerge, traders adjust their positions, and prices move to reflect updated expectations for the low temperature on that date.
This market resolves around Jun 28, 2026, once the lowest temperature recorded in Philadelphia on June 27, 2026 is verified against credible public sources. The outcome is determined by the actual observed minimum temperature for that calendar day, confirmed through official meteorological records. Traders' positions settle based on which outcome bracket or threshold the verified temperature falls into, concluding the prediction event.
Long-range climate oscillations—including sea-surface temperature patterns, the Atlantic Multidecadal Oscillation, and solar activity—can shift seasonal temperature expectations. Updated climate models and extended-range forecasts released by meteorological agencies will influence trader positioning as June 2026 approaches. Urban heat-island effects, land-use changes, and any anomalous weather patterns in the months leading up to the event may also prompt traders to adjust their bets, causing price swings in this market.