Current National Weather Service forecast guidance and supporting model runs point to a daily high of 58–59°F at Seattle-Tacoma International Airport, reflecting persistent marine-layer stratus and weak onshore flow that limit afternoon warming. This setup aligns with climatological norms for mid-May, when cool Pacific air and cloud cover typically cap highs several degrees below seasonal averages. The market’s near-certain pricing on the 58–59°F bin captures this consensus, with traders weighting official KSEA observations as the resolution source. A rapid marine-layer breakup or stronger offshore component could push readings into the low 60s, but current model agreement and observed boundary-layer stability make such shifts unlikely before sunset.
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 16?
58-59°F 99.6%
62-63°F <1%
60-61°F <1%
64-65°F <1%
$89,700 Vol.
$89,700 Vol.
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
100%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
<1%
58-59°F 99.6%
62-63°F <1%
60-61°F <1%
64-65°F <1%
$89,700 Vol.
$89,700 Vol.
50-51°F
<1%
52-53°F
<1%
54-55°F
<1%
56-57°F
<1%
58-59°F
100%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°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 14, 2026, 12:06 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
Current National Weather Service forecast guidance and supporting model runs point to a daily high of 58–59°F at Seattle-Tacoma International Airport, reflecting persistent marine-layer stratus and weak onshore flow that limit afternoon warming. This setup aligns with climatological norms for mid-May, when cool Pacific air and cloud cover typically cap highs several degrees below seasonal averages. The market’s near-certain pricing on the 58–59°F bin captures this consensus, with traders weighting official KSEA observations as the resolution source. A rapid marine-layer breakup or stronger offshore component could push readings into the low 60s, but current model agreement and observed boundary-layer stability make such shifts unlikely before sunset.
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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