National Weather Service guidance and ensemble models currently project a daytime high near 62°F for Seattle on May 17, driven by persistent onshore flow from the cool Pacific that caps afternoon warming in the region’s maritime climate. This forecast places the 62-63°F range as the market leader, with the 64°F-or-higher band reflecting residual uncertainty in model spread and the 60-61°F outcome capturing the lower end of possible deviations. Mid-May climatology for the area typically features highs in the upper 50s to low 60s, providing historical context that reinforces trader focus on this narrow band. Updated model runs and any shifts in onshore versus offshore flow over the next several hours will determine final resolution.
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 17?
62-63°F 40%
64°F or higher 34%
60-61°F 22%
58-59°F 6.5%
$23,484 Vol.
$23,484 Vol.
45°F or below
<1%
46-47°F
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
1%
56-57°F
1%
58-59°F
6%
60-61°F
22%
62-63°F
40%
64°F or higher
34%
62-63°F 40%
64°F or higher 34%
60-61°F 22%
58-59°F 6.5%
$23,484 Vol.
$23,484 Vol.
45°F or below
<1%
46-47°F
<1%
48-49°F
<1%
50-51°F
<1%
52-53°F
<1%
54-55°F
1%
56-57°F
1%
58-59°F
6%
60-61°F
22%
62-63°F
40%
64°F or higher
34%
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 15, 2026, 12:03 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAThe 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/KSEANational Weather Service guidance and ensemble models currently project a daytime high near 62°F for Seattle on May 17, driven by persistent onshore flow from the cool Pacific that caps afternoon warming in the region’s maritime climate. This forecast places the 62-63°F range as the market leader, with the 64°F-or-higher band reflecting residual uncertainty in model spread and the 60-61°F outcome capturing the lower end of possible deviations. Mid-May climatology for the area typically features highs in the upper 50s to low 60s, providing historical context that reinforces trader focus on this narrow band. Updated model runs and any shifts in onshore versus offshore flow over the next several hours will determine final resolution.
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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