Trader consensus on Polymarket reflects tight uncertainty in National Weather Service forecasts for Seattle's March 29 high temperature, with ensemble models from GFS and ECMWF clustering probabilities around 50-56°F amid variable cloud cover and marine layer persistence. Recent 24-hour updates show NWS guidance steady at a high near 52°F under partly sunny skies, up slightly from cooler outlooks earlier in the week due to a weakening frontal boundary allowing modest diurnal warming from overnight lows in the mid-40s. Differentiating factors include potential Puget Sound convergence zone clouds capping highs at 50-51°F versus clearer breaks pushing toward 54-56°F, with 56°F+ viable if stronger ridging develops; historical March averages hover at 54°F, underscoring the razor-thin model spread ahead of afternoon observations. New hourly updates from Sea-Tac Airport will sharpen resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seattle on March 29?
Highest temperature in Seattle on March 29?
56°F or higher 26%
50-51°F 22%
52-53°F 21%
48-49°F 19%
37°F or below
1%
38-39°F
5%
40-41°F
2%
42-43°F
3%
44-45°F
7%
46-47°F
13%
48-49°F
19%
50-51°F
22%
52-53°F
21%
54-55°F
18%
56°F or higher
27%
56°F or higher 26%
50-51°F 22%
52-53°F 21%
48-49°F 19%
37°F or below
1%
38-39°F
5%
40-41°F
2%
42-43°F
3%
44-45°F
7%
46-47°F
13%
48-49°F
19%
50-51°F
22%
52-53°F
21%
54-55°F
18%
56°F or higher
27%
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 25, 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 reflects tight uncertainty in National Weather Service forecasts for Seattle's March 29 high temperature, with ensemble models from GFS and ECMWF clustering probabilities around 50-56°F amid variable cloud cover and marine layer persistence. Recent 24-hour updates show NWS guidance steady at a high near 52°F under partly sunny skies, up slightly from cooler outlooks earlier in the week due to a weakening frontal boundary allowing modest diurnal warming from overnight lows in the mid-40s. Differentiating factors include potential Puget Sound convergence zone clouds capping highs at 50-51°F versus clearer breaks pushing toward 54-56°F, with 56°F+ viable if stronger ridging develops; historical March averages hover at 54°F, underscoring the razor-thin model spread ahead of afternoon observations. New hourly updates from Sea-Tac Airport will sharpen resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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