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: Jul 12, 4:00 AM EST
Kalshi
This market tracks the lowest temperature recorded in Seattle on July 11, 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, WA on July 11, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed through the NWS Western Region Climate portal by selecting Seattle-Tacoma with the Daily Climate Report option. Traders should use the latest available version of the data for the specified date. While preliminary NWS data and alternative weather sources like AccuWeather or Google Weather may provide guidance, the final authoritative value is determined exclusively by the NWS Climatological Report (Daily). Preliminary NWS reporting may be subject to rounding and conversion nuances that could affect interpretation of borderline values.
Prediction market odds reflect aggregated trader beliefs and often diverge from traditional meteorological forecasts. While weather analysts rely on numerical models and historical patterns, this market incorporates real-time information and trader conviction through price discovery. Markets tend to update faster than seasonal outlooks when new data emerges, though both sources converge as the event date nears. Comparing the implied probability here to official forecasts from the National Weather Service can reveal where traders see asymmetric risk or underappreciated scenarios.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares corresponding to specific temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome bracket has its own bid-ask spread, and the midpoint price reflects the collective probability assigned by active participants. As new information surfaces—seasonal forecasts, climate patterns, or real-time weather data—traders adjust positions, moving prices to equilibrate supply and demand across all temperature bands.
This market resolves around Jul 12, 2026, once the lowest temperature recorded in Seattle on July 11, 2026 is verified and confirmed. The outcome is determined by comparing actual observed conditions against the predefined temperature brackets offered in the market. Resolution occurs after the event date has passed and credible public reporting establishes the final low temperature, allowing the platform to settle all positions accordingly.
Major atmospheric patterns, seasonal climate forecasts, and long-range weather models will influence trader positioning over the coming months. El Niño or La Niña conditions, Arctic oscillation shifts, and updated seasonal outlooks from meteorological agencies can trigger significant repricing. As summer 2026 approaches, weekly and daily forecasts will dominate trading activity, with any unusual heat waves or cold snaps in the Pacific Northwest region potentially accelerating market moves. Real-time atmospheric data and unexpected climate anomalies remain the primary catalysts for volatility.