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: Jun 17, 4:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Seattle on June 16, 2026. The outcome will be determined by the official National Weather Service daily climatological report for Seattle-Tacoma, which provides the authoritative minimum temperature measurement for that date.
Resolution is based on the minimum temperature recorded at Seattle-Tacoma on June 16, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS website at the specified URL, selecting Seattle-Tacoma, WA with Daily Climate Report. The minimum temperature is divided into six ranges: 53°F or below, 54-55°F, 56-57°F, 58-59°F, 60-61°F, and 62°F or above. Each range corresponds to a distinct 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 definitive source, superseding other weather services.
Prediction market odds often diverge from traditional weather analyst forecasts because they incorporate real-time trader behavior, economic incentives, and collective information aggregation. While meteorologists rely on physics-based models and historical data, this market reflects what thousands of participants believe will actually occur, weighted by their financial commitment. Analysts may issue point forecasts or confidence ranges, whereas traders here express their views through continuous price discovery. Over time, prediction markets have proven competitive with or superior to expert forecasts in many domains, though comparing the two approaches reveals how different methodologies and incentive structures produce distinct probability estimates.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing different temperature ranges or outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The bid-ask spread reflects the current supply and demand for each outcome, and prices move as new information arrives or trader conviction shifts. Each contract's price directly represents the market's implied probability of that outcome occurring. Liquidity and trading volume determine how easily you can enter or exit positions, and the platform's matching engine executes trades at the best available prices in real time.
This market resolves around Jun 17, 2026, after June 16, 2026 has passed and the lowest temperature recorded in Seattle that day is verifiable from credible public sources. The outcome is determined by the actual meteorological data reported for that date, confirmed through established weather reporting channels. Once the event is observable and documented, the market settles according to which outcome bracket or threshold the verified temperature falls into. Traders' positions are then finalized based on the confirmed result.
Several factors could shift market prices leading up to June 2026. Seasonal climate patterns, El Niño or La Niña conditions, and long-range weather models updated throughout spring will influence trader expectations. Major volcanic eruptions or other atmospheric events could alter temperature forecasts. As June approaches, medium-range weather forecasts become more reliable, typically triggering sharper price movements. Real-time atmospheric data, jet stream positioning, and any unusual weather patterns in the weeks before the event will attract trader attention. News about climate anomalies or regional weather systems could also prompt rapid repricing as new information becomes available.