TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 25, 4:00 AM EST
Kalshi
This event tracks the highest temperature recorded in Seattle on June 24, 2026. The outcome will be determined by the official National Weather Service Climatological Report for that date, with resolution based on which temperature range the recorded maximum falls into.
Resolution is determined by the maximum temperature recorded at Seattle-Tacoma, WA 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 at the Seattle office, selecting the "Observed Weather" tab and "Seattle-Tacoma, WA" location with Daily Climate Report. Temperature ranges are: 82°F or below, 83-84°F, 85-86°F, 87-88°F, 89-90°F, and 91°F or above. Each range corresponds to a distinct 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.
Prediction market odds often diverge from traditional meteorological forecasts because they incorporate real-time trader conviction and broader information flows beyond standard weather models. While meteorologists rely on atmospheric data and historical patterns, this market aggregates the collective judgment of traders who may factor in climate trends, seasonal anomalies, and long-range uncertainty. Comparing odds to published forecasts from the National Weather Service or other agencies can reveal where the market is pricing in additional risk or confidence. Over time, prediction markets have demonstrated competitive accuracy against expert forecasts, though they remain most reliable closer to the event date.
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 market's liquidity and uncertainty; tighter spreads indicate high confidence and trading volume, while wider spreads suggest lower participation or genuine disagreement on the likely outcome. Prices move in real time as new information arrives, and traders can enter limit or market orders to adjust their positions. The platform's matching engine ensures transparent price discovery throughout the trading period.
This market resolves around Jun 25, 2026, once the highest temperature recorded in Seattle on June 24, 2026 is verified and finalized. The outcome is confirmed against credible public sources such as official weather station data or recognized meteorological records. Traders holding positions aligned with the verified temperature outcome receive their winnings, while opposing positions settle at zero. The exact resolution mechanics are governed by the platform's terms, ensuring all participants are treated fairly and consistently.
Major climate patterns, seasonal forecasts, and long-range weather models will be key drivers of market movement leading up to June 2026. El Niño or La Niña conditions, shifts in the Pacific jet stream, and anomalous heat waves in the Pacific Northwest could all influence trader expectations. As the date approaches, medium-range forecasts from the National Weather Service and other agencies will become increasingly relevant, potentially triggering sharp repricing. Real-time atmospheric data, soil moisture levels, and any unusual weather events in the months prior will also shape how traders adjust their positions and conviction around the final temperature outcome.