National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded daytime highs reaching at least 64°F on April 26, driving trader consensus to a 100% implied probability for 64°F or higher, as preliminary Automated Surface Observing System (ASOS) data aligns with clear skies and light winds following a morning frost advisory. This warmth exceeds the April climatological average high of around 58°F, aided by a persistent high-pressure ridge over the Pacific Northwest promoting solar heating and minimal cloud cover. While final data on Weather Underground awaits verification—typically within 24 hours—revisions are rare absent sensor issues; a downward adjustment from equipment malfunction could theoretically challenge the outcome, though current METAR reports show stable peaks well above the threshold.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seattle on April 26?
64°F or higher 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$27,793 Vol.
$27,793 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64°F or higher
Yes
64°F or higher 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$27,793 Vol.
$27,793 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64°F or higher
Yes
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Seattle-Tacoma International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 24, 2026, 12:07 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Seattle-Tacoma International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded daytime highs reaching at least 64°F on April 26, driving trader consensus to a 100% implied probability for 64°F or higher, as preliminary Automated Surface Observing System (ASOS) data aligns with clear skies and light winds following a morning frost advisory. This warmth exceeds the April climatological average high of around 58°F, aided by a persistent high-pressure ridge over the Pacific Northwest promoting solar heating and minimal cloud cover. While final data on Weather Underground awaits verification—typically within 24 hours—revisions are rare absent sensor issues; a downward adjustment from equipment malfunction could theoretically challenge the outcome, though current METAR reports show stable peaks well above the threshold.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions