Trader sentiment splits evenly between 43°F or below and 54-55°F for Seattle-Tacoma International Airport's (KSEA) high on April 20, reflecting genuine uncertainty in National Weather Service (NWS) forecast models amid Pacific Northwest spring variability. Following anomalous snow, hail, and a waterspout on April 15 plus cool, showery conditions through April 17 (KSEA high near 57°F under weak high pressure), emerging ridging risks amplification or stalling, with GFS and ECMWF ensembles diverging on marine stratus persistence versus burn-off. Differentiating factors include low-cloud deck trapping heat via low-level inversion, onshore flow capping highs below 50°F, or southerly winds and solar heating pushing 54-55°F near climatological norms (~58°F). New model runs and Saturday observations will clarify ahead of resolution.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoHighest temperature in Seattle on April 20?
Highest temperature in Seattle on April 20?
62°F or higher 94%
48-49°F 4.1%
52-53°F 2.5%
54-55°F 2.5%
43°F or below
1%
44-45°F
1%
46-47°F
1%
48-49°F
4%
50-51°F
1%
52-53°F
3%
54-55°F
3%
56-57°F
3%
58-59°F
7%
60-61°F
7%
62°F or higher
94%
62°F or higher 94%
48-49°F 4.1%
52-53°F 2.5%
54-55°F 2.5%
43°F or below
1%
44-45°F
1%
46-47°F
1%
48-49°F
4%
50-51°F
1%
52-53°F
3%
54-55°F
3%
56-57°F
3%
58-59°F
7%
60-61°F
7%
62°F or higher
94%
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.
Mercato aperto: Apr 18, 2026, 12:31 AM ET
Fonte di risoluzione
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.
Fonte di risoluzione
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Trader sentiment splits evenly between 43°F or below and 54-55°F for Seattle-Tacoma International Airport's (KSEA) high on April 20, reflecting genuine uncertainty in National Weather Service (NWS) forecast models amid Pacific Northwest spring variability. Following anomalous snow, hail, and a waterspout on April 15 plus cool, showery conditions through April 17 (KSEA high near 57°F under weak high pressure), emerging ridging risks amplification or stalling, with GFS and ECMWF ensembles diverging on marine stratus persistence versus burn-off. Differentiating factors include low-cloud deck trapping heat via low-level inversion, onshore flow capping highs below 50°F, or southerly winds and solar heating pushing 54-55°F near climatological norms (~58°F). New model runs and Saturday observations will clarify ahead of resolution.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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