Trader consensus on Polymarket heavily favors a Seattle high temperature of 54-55°F (47.5%) or 56-57°F (30%), aligning with the latest National Weather Service forecasts indicating a peak near 56°F amid widespread clouds and showers. Persistent onshore flow from the Pacific has deepened the marine layer over Puget Sound, advecting cool, moist air that suppresses diurnal heating and limits insolation—similar to recent days but with increased precipitation risk from an approaching low-pressure system. This follows a warmer mid-week pattern, but model consensus from GFS and ECMWF runs reinforces mid-50s highs against April climatological norms of about 56°F. Uncertainty persists in shower timing and afternoon cloud breaks, with hourly observations at Sea-Tac Airport determining resolution; expect NWS updates this afternoon to refine probabilities.
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 11?
Highest temperature in Seattle on April 11?
54-55°F 49%
56-57°F 38%
53°F or below 12.3%
58-59°F 4.0%
$89,452 Vol.
$89,452 Vol.
53°F or below
12%
54-55°F
49%
56-57°F
38%
58-59°F
4%
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°F or higher
<1%
54-55°F 49%
56-57°F 38%
53°F or below 12.3%
58-59°F 4.0%
$89,452 Vol.
$89,452 Vol.
53°F or below
12%
54-55°F
49%
56-57°F
38%
58-59°F
4%
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°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: Apr 7, 2026, 12:37 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...Trader consensus on Polymarket heavily favors a Seattle high temperature of 54-55°F (47.5%) or 56-57°F (30%), aligning with the latest National Weather Service forecasts indicating a peak near 56°F amid widespread clouds and showers. Persistent onshore flow from the Pacific has deepened the marine layer over Puget Sound, advecting cool, moist air that suppresses diurnal heating and limits insolation—similar to recent days but with increased precipitation risk from an approaching low-pressure system. This follows a warmer mid-week pattern, but model consensus from GFS and ECMWF runs reinforces mid-50s highs against April climatological norms of about 56°F. Uncertainty persists in shower timing and afternoon cloud breaks, with hourly observations at Sea-Tac Airport determining resolution; expect NWS updates this afternoon to refine probabilities.
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