Trader consensus on Polymarket heavily favors a Seattle high temperature of 56-57°F (41.5% implied probability) over 54-55°F (32%), reflecting the latest National Weather Service forecast of 55-58°F driven by persistent cool marine air advection from the Pacific and lingering low-level clouds limiting daytime heating. Ensemble model runs from GFS and ECMWF this week show a tight clustering in the mid-50s°F range, with minor divergences tied to the timing of any afternoon clearing and boundary layer mixing—factors differentiating the top bins amid typical March climatology averaging 55-56°F highs at Seattle-Tacoma International Airport (KSEA), the resolution site. Uncertainty persists in mesoscale details; new 12z model updates expected later today could shift the narrow spread.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 27?
Highest temperature in Seattle on March 27?
56-57°F 42%
54-55°F 32%
58-59°F 9.8%
52-53°F 8%
$26,371 Vol.
$26,371 Vol.
45°F or below
1%
46-47°F
<1%
48-49°F
1%
50-51°F
2%
52-53°F
8%
54-55°F
32%
56-57°F
42%
58-59°F
10%
60-61°F
3%
62-63°F
1%
64°F or higher
<1%
56-57°F 42%
54-55°F 32%
58-59°F 9.8%
52-53°F 8%
$26,371 Vol.
$26,371 Vol.
45°F or below
1%
46-47°F
<1%
48-49°F
1%
50-51°F
2%
52-53°F
8%
54-55°F
32%
56-57°F
42%
58-59°F
10%
60-61°F
3%
62-63°F
1%
64°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 23, 2026, 6:02 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 56-57°F (41.5% implied probability) over 54-55°F (32%), reflecting the latest National Weather Service forecast of 55-58°F driven by persistent cool marine air advection from the Pacific and lingering low-level clouds limiting daytime heating. Ensemble model runs from GFS and ECMWF this week show a tight clustering in the mid-50s°F range, with minor divergences tied to the timing of any afternoon clearing and boundary layer mixing—factors differentiating the top bins amid typical March climatology averaging 55-56°F highs at Seattle-Tacoma International Airport (KSEA), the resolution site. Uncertainty persists in mesoscale details; new 12z model updates expected later today could shift the narrow spread.
Experimental AI-generated summary referencing Polymarket data · Updated
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