Trader consensus clusters tightly around 48-53°F for Seattle's March 26 high, driven by the latest NOAA and ECMWF ensemble forecasts averaging 50-52°F amid persistent marine layer clouds and cool northerly flow. Differentiating factors include model divergence on boundary layer mixing: GFS runs favor slight clearing for 52-53°F peaks, while cooler Euro variants emphasize stratiform clouds capping highs at 48-49°F. Historical late-March norms (51°F average) and recent soundings showing strong inversions add uncertainty, with 50-51°F as a compromise amid low-confidence 12-18 hour outlooks. Upcoming 12Z model updates could shift odds if Pacific ridging strengthens.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 26?
Highest temperature in Seattle on March 26?
52-53°F 26%
48-49°F 25%
50-51°F 25%
54-55°F 17%
43°F or below
2%
44-45°F
12%
46-47°F
15%
48-49°F
25%
50-51°F
25%
52-53°F
26%
54-55°F
17%
56-57°F
17%
58-59°F
15%
60-61°F
12%
62°F or higher
2%
52-53°F 26%
48-49°F 25%
50-51°F 25%
54-55°F 17%
43°F or below
2%
44-45°F
12%
46-47°F
15%
48-49°F
25%
50-51°F
25%
52-53°F
26%
54-55°F
17%
56-57°F
17%
58-59°F
15%
60-61°F
12%
62°F or higher
2%
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 22, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Trader consensus clusters tightly around 48-53°F for Seattle's March 26 high, driven by the latest NOAA and ECMWF ensemble forecasts averaging 50-52°F amid persistent marine layer clouds and cool northerly flow. Differentiating factors include model divergence on boundary layer mixing: GFS runs favor slight clearing for 52-53°F peaks, while cooler Euro variants emphasize stratiform clouds capping highs at 48-49°F. Historical late-March norms (51°F average) and recent soundings showing strong inversions add uncertainty, with 50-51°F as a compromise amid low-confidence 12-18 hour outlooks. Upcoming 12Z model updates could shift odds if Pacific ridging strengthens.
Experimental AI-generated summary referencing Polymarket data · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions