Trader consensus overwhelmingly favors 58-59°F (100%) for Seattle's highest temperature on March 27, 2026, backed by official National Weather Service observations at Seattle-Tacoma International Airport (Sea-Tac, KSEA), which recorded a maximum of 58°F at 4:24 PM local time under a stable high-pressure ridge promoting mild adiabatic warming, partly cloudy skies, light northwesterly winds (max 13 mph), and no precipitation. This aligns precisely with NOAA GFS and ECMWF ensemble forecasts predicting upper-50s highs, consistent with late-March climatology (normal maximum ~56°F, +2°F departure). Realistic challenges are minimal—only rare post-observation data revisions from instrument recalibration or quality control could alter it, though Sea-Tac's surface thermometers exhibit near-perfect reliability.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 27?
Highest temperature in Seattle on March 27?
58-59°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$174,804 Vol.
$174,804 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
Yes
60-61°F
No
62-63°F
No
64°F or higher
No
58-59°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$174,804 Vol.
$174,804 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
No
56-57°F
No
58-59°F
Yes
60-61°F
No
62-63°F
No
64°F or higher
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.
Market Opened: Mar 23, 2026, 6:02 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
Trader consensus overwhelmingly favors 58-59°F (100%) for Seattle's highest temperature on March 27, 2026, backed by official National Weather Service observations at Seattle-Tacoma International Airport (Sea-Tac, KSEA), which recorded a maximum of 58°F at 4:24 PM local time under a stable high-pressure ridge promoting mild adiabatic warming, partly cloudy skies, light northwesterly winds (max 13 mph), and no precipitation. This aligns precisely with NOAA GFS and ECMWF ensemble forecasts predicting upper-50s highs, consistent with late-March climatology (normal maximum ~56°F, +2°F departure). Realistic challenges are minimal—only rare post-observation data revisions from instrument recalibration or quality control could alter it, though Sea-Tac's surface thermometers exhibit near-perfect reliability.
Experimental AI-generated summary referencing Polymarket data · Updated
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