Trader consensus on Polymarket heavily favors a Seattle high temperature of 50-51°F (48% implied probability), driven by the National Weather Service's latest forecast guidance projecting a daytime maximum near 51°F under partly cloudy skies with light onshore flow. Ensemble models from GFS and ECMWF have converged on upper 40s to low 50s, reflecting persistent marine layer cooling typical for late March in the Pacific Northwest, where historical averages hover around 54°F but cool anomalies prevail 40% of the time. Recent SeaTac observations on March 24 logged a 49°F high amid similar conditions, reinforcing these odds while downweighting warmer outliers above 54°F amid low-confidence ridging signals. Upcoming hourly updates could shift probabilities if boundary layer mixing intensifies.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 25?
Highest temperature in Seattle on March 25?
50-51°F 48%
48-49°F 27%
52-53°F 11.2%
46-47°F 6.0%
$55,041 Vol.
$55,041 Vol.
44-45°F
1%
46-47°F
6%
48-49°F
27%
50-51°F
48%
52-53°F
11%
54-55°F
2%
56-57°F
<1%
58°F or higher
<1%
50-51°F 48%
48-49°F 27%
52-53°F 11.2%
46-47°F 6.0%
$55,041 Vol.
$55,041 Vol.
44-45°F
1%
46-47°F
6%
48-49°F
27%
50-51°F
48%
52-53°F
11%
54-55°F
2%
56-57°F
<1%
58°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: Mar 21, 2026, 6:02 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 on Polymarket heavily favors a Seattle high temperature of 50-51°F (48% implied probability), driven by the National Weather Service's latest forecast guidance projecting a daytime maximum near 51°F under partly cloudy skies with light onshore flow. Ensemble models from GFS and ECMWF have converged on upper 40s to low 50s, reflecting persistent marine layer cooling typical for late March in the Pacific Northwest, where historical averages hover around 54°F but cool anomalies prevail 40% of the time. Recent SeaTac observations on March 24 logged a 49°F high amid similar conditions, reinforcing these odds while downweighting warmer outliers above 54°F amid low-confidence ridging signals. Upcoming hourly updates could shift probabilities if boundary layer mixing intensifies.
Experimental AI-generated summary referencing Polymarket data · Updated
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