National Weather Service forecast models currently project a daily high near 54°F at Seattle-Tacoma International Airport, anchoring trader consensus on the 54-55°F outcome as the clear leader. Seattle’s marine-influenced climate, with persistent onshore flow from the Pacific and possible lingering stratus clouds, is limiting daytime solar heating and keeping temperatures well below the mid-May climatological average of upper 50s to low 60s. Recent model runs show minimal spread, with southwest winds around 10-20 mph further moderating conditions. Any late-day clearing could push readings into the upper 50s, but current guidance and historical analogs for similar synoptic setups keep the probability of exceeding 57°F low. Resolution will hinge on the official KSEA observation at the end of the calendar day.
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?
54-55°F 41%
56-57°F 24%
52-53°F 13%
50-51°F 8%
$35,781 Vol.
$35,781 Vol.
47°F or below
<1%
48-49°F
1%
50-51°F
8%
52-53°F
13%
54-55°F
41%
56-57°F
24%
58-59°F
3%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
<1%
54-55°F 41%
56-57°F 24%
52-53°F 13%
50-51°F 8%
$35,781 Vol.
$35,781 Vol.
47°F or below
<1%
48-49°F
1%
50-51°F
8%
52-53°F
13%
54-55°F
41%
56-57°F
24%
58-59°F
3%
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...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 forecast models currently project a daily high near 54°F at Seattle-Tacoma International Airport, anchoring trader consensus on the 54-55°F outcome as the clear leader. Seattle’s marine-influenced climate, with persistent onshore flow from the Pacific and possible lingering stratus clouds, is limiting daytime solar heating and keeping temperatures well below the mid-May climatological average of upper 50s to low 60s. Recent model runs show minimal spread, with southwest winds around 10-20 mph further moderating conditions. Any late-day clearing could push readings into the upper 50s, but current guidance and historical analogs for similar synoptic setups keep the probability of exceeding 57°F low. Resolution will hinge on the official KSEA observation at the end of the calendar day.
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