Official National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded a maximum temperature of 55°F on April 13, 2026, around 4:53 PM local time, solidifying trader consensus at 100% implied probability for the 54-55°F outcome on Polymarket. Cool onshore flow from the Pacific introduced a persistent marine layer, mostly cloudy skies, and light morning rain (0.03 inches total), suppressing daytime heating and keeping highs 2-5°F below the early April climatological average of about 57°F. Short-range NOAA forecast models had accurately projected this outcome 24-48 hours prior amid low-level stratus clouds and southerly winds gusting to 18 mph. Post-event data revisions are exceedingly rare for automated ASOS stations like KSEA, though an instrument malfunction or quality-control adjustment could theoretically prompt a minor shift before final resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seattle on April 13?
Highest temperature in Seattle on April 13?
54-55°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$135,784 Vol.
$135,784 Vol.
Apr 13, 2026
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
Yes
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64°F or higher
No
54-55°F 100.0%
45°F or below <1%
46-47°F <1%
48-49°F <1%
$135,784 Vol.
$135,784 Vol.
Apr 13, 2026
45°F or below
$11,054 Vol.
No
46-47°F
$1,252 Vol.
No
48-49°F
$5,283 Vol.
No
50-51°F
$17,984 Vol.
No
52-53°F
$11,537 Vol.
No
54-55°F
$44,805 Vol.
Yes
56-57°F
$22,423 Vol.
No
58-59°F
$9,391 Vol.
No
60-61°F
$4,486 Vol.
No
62-63°F
$2,816 Vol.
No
64°F or higher
$4,752 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Apr '26.
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.Official National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded a maximum temperature of 55°F on April 13, 2026, around 4:53 PM local time, solidifying trader consensus at 100% implied probability for the 54-55°F outcome on Polymarket. Cool onshore flow from the Pacific introduced a persistent marine layer, mostly cloudy skies, and light morning rain (0.03 inches total), suppressing daytime heating and keeping highs 2-5°F below the early April climatological average of about 57°F. Short-range NOAA forecast models had accurately projected this outcome 24-48 hours prior amid low-level stratus clouds and southerly winds gusting to 18 mph. Post-event data revisions are exceedingly rare for automated ASOS stations like KSEA, though an instrument malfunction or quality-control adjustment could theoretically prompt a minor shift before final resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Apr '26.
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.
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: Apr 9, 2026, 12:08 AM ET
Volume
$135,784End Date
Apr 13, 2026Market Opened
Apr 9, 2026, 12:08 AM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Apr '26.
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.Official National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded a maximum temperature of 55°F on April 13, 2026, around 4:53 PM local time, solidifying trader consensus at 100% implied probability for the 54-55°F outcome on Polymarket. Cool onshore flow from the Pacific introduced a persistent marine layer, mostly cloudy skies, and light morning rain (0.03 inches total), suppressing daytime heating and keeping highs 2-5°F below the early April climatological average of about 57°F. Short-range NOAA forecast models had accurately projected this outcome 24-48 hours prior amid low-level stratus clouds and southerly winds gusting to 18 mph. Post-event data revisions are exceedingly rare for automated ASOS stations like KSEA, though an instrument malfunction or quality-control adjustment could theoretically prompt a minor shift before final resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Apr '26.
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.
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.
Volume
$135,784End Date
Apr 13, 2026Market Opened
Apr 9, 2026, 12:08 AM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official National Weather Service observations at Seattle-Tacoma International Airport (KSEA) recorded a maximum temperature of 55°F on April 13, 2026, around 4:53 PM local time, solidifying trader consensus at 100% implied probability for the 54-55°F outcome on Polymarket. Cool onshore flow from the Pacific introduced a persistent marine layer, mostly cloudy skies, and light morning rain (0.03 inches total), suppressing daytime heating and keeping highs 2-5°F below the early April climatological average of about 57°F. Short-range NOAA forecast models had accurately projected this outcome 24-48 hours prior amid low-level stratus clouds and southerly winds gusting to 18 mph. Post-event data revisions are exceedingly rare for automated ASOS stations like KSEA, though an instrument malfunction or quality-control adjustment could theoretically prompt a minor shift before final resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions