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 25, 1:00 AM EST
Kalshi
This event tracks the lowest temperature recorded in Philadelphia on June 24, 2026. The outcome will be determined by the National Weather Service's official daily climatological report for Philadelphia, which provides the authoritative minimum temperature measurement for that date.
Resolution is based on the minimum temperature recorded at Philadelphia, PA on June 24, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed via the NWS website by navigating to the Observed Weather tab and selecting Philadelphia, PA with Daily Climate Report. The reported minimum temperature determines which outcome resolves affirmatively. 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 like AccuWeather or Google Weather.
Prediction market odds often diverge from traditional weather forecasts because they incorporate real-time trader positioning and aggregate dispersed information beyond standard meteorological models. While meteorologists rely on atmospheric data and historical patterns, this market reflects the collective judgment of traders betting capital on the outcome. Analyst forecasts tend to be issued days or weeks in advance, whereas market prices adjust dynamically. Over time, prediction markets have demonstrated competitive accuracy against expert forecasts, particularly when liquidity is robust and traders have strong incentives to price outcomes correctly.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing different temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome has a price between 0 and 100 cents, reflecting the implied probability that the lowest temperature will fall within that range. Traders profit by correctly predicting which outcome occurs, and prices adjust in real time as new orders flow in. The spread between bid and ask prices reflects market liquidity and uncertainty around the final outcome.
This market resolves around Jun 25, 2026, after June 24, 2026 has passed and the lowest temperature in Philadelphia for that day can be verified. The outcome is confirmed once the event is verifiable from credible public reporting. Traders holding shares in the correct outcome receive their payout, while incorrect positions expire worthless. Resolution timing depends on data availability, but markets typically settle within hours of the event conclusion.
Weather forecasts and seasonal climate patterns are primary drivers of price movement in this market. Major atmospheric systems, jet stream positioning, and long-range weather models released closer to June 2026 will likely trigger significant trading activity. Historical temperature records for Philadelphia in late June provide a baseline that traders reference when evaluating probabilities. Media coverage of unusual weather patterns or climate anomalies could also shift sentiment. As the event date nears, intraday forecasts become increasingly influential, often causing sharp repricing in the final days.