- Will the highest temperature in Seattle be 69°F or below on August 19?<1¢
- Will the highest temperature in Seattle be between 70-71°F on August 19?1¢
- Will the highest temperature in Seattle be between 72-73°F on August 19?3¢
- Will the highest temperature in Seattle be between 74-75°F on August 19?10¢
- Will the highest temperature in Seattle be between 76-77°F on August 19?27¢
- Will the highest temperature in Seattle be between 78-79°F on August 19?46¢
- Will the highest temperature in Seattle be between 80-81°F on August 19?17¢
- Will the highest temperature in Seattle be between 82-83°F on August 19?3¢
- Will the highest temperature in Seattle be between 84-85°F on August 19?<1¢
- Will the highest temperature in Seattle be between 86-87°F on August 19?<1¢
- Will the highest temperature in Seattle be 88°F or higher on August 19?<1¢
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section. This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 19 Aug '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, available here: https://www.wunderground.com/history/daily/us/wa/seatac/KSEA. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Current National Weather Service guidance and ensemble model runs point to a Seattle high near 75–78 °F on August 19 under a weak upper-level ridge and light onshore flow, aligning with the market’s leading 78–79 °F bin. Persistent sunny to mostly-sunny conditions and above-average 500-hPa heights favor modest daytime warming without strong marine intrusion or cloud cover that would cap temperatures. This consensus matches climatological August averages around 77 °F while reflecting limited model spread that keeps the 76–77 °F and 80–81 °F ranges as secondary possibilities. Traders are weighting the latest short-range forecasts heavily ahead of final observations tomorrow.