National Weather Service forecasts for Seattle-Tacoma International Airport indicate a daytime high near 55-57°F on May 15, driven by persistent onshore flow from a Northeast Pacific trough that sustains marine stratus clouds and suppresses heating, with possible light drizzle and partly cloudy skies. This aligns with GFS and ECMWF model consensus showing limited sunshine penetration, positioning the 57°F or below outcome at 88.5% trader-implied probability amid a multi-day cool and unsettled pattern. Recent area forecast discussions confirm no significant warming signal, though early stratus burn-off could nudge temps toward 58-59°F (9.4% odds). Observational data will finalize resolution post-midnight May 16.
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 May 15?
Highest temperature in Seattle on May 15?
57°F or below 88%
58-59°F 9.4%
60-61°F <1%
62-63°F <1%
$13,651 Vol.
$13,651 Vol.
57°F or below
88%
58-59°F
9%
60-61°F
1%
62-63°F
1%
64-65°F
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76°F or higher
<1%
57°F or below 88%
58-59°F 9.4%
60-61°F <1%
62-63°F <1%
$13,651 Vol.
$13,651 Vol.
57°F or below
88%
58-59°F
9%
60-61°F
1%
62-63°F
1%
64-65°F
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76°F or higher
<1%
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: May 13, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...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...National Weather Service forecasts for Seattle-Tacoma International Airport indicate a daytime high near 55-57°F on May 15, driven by persistent onshore flow from a Northeast Pacific trough that sustains marine stratus clouds and suppresses heating, with possible light drizzle and partly cloudy skies. This aligns with GFS and ECMWF model consensus showing limited sunshine penetration, positioning the 57°F or below outcome at 88.5% trader-implied probability amid a multi-day cool and unsettled pattern. Recent area forecast discussions confirm no significant warming signal, though early stratus burn-off could nudge temps toward 58-59°F (9.4% odds). Observational data will finalize resolution post-midnight May 16.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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