National Weather Service guidance and ensemble models indicate a daily maximum near 77–79°F for Seattle on August 11, shaped by a moderating marine layer and onshore flow that caps daytime heating after morning cloud cover. This aligns with August climatology at Sea-Tac, where the median high is about 76°F, though 2026’s broader summer warmth has kept conditions modestly above normal. Traders assign the highest implied probability (44.5%) to 78–79°F because recent model runs show limited potential for stronger ridging or offshore flow that could push readings into the low 80s, while the chance of cooler marine influence keeps lower bins like 76–77°F in play at 18.5%. Updated forecasts ahead of the 24-hour window will determine 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 August 11?
Highest temperature in Seattle on August 11?
78-79°F 44%
80-81°F 28%
76-77°F 19%
82-83°F 6%
NEW
NEW
Aug 11, 2026
71°F or below
1%
72-73°F
1%
74-75°F
6%
76-77°F
19%
78-79°F
44%
80-81°F
28%
82-83°F
6%
84-85°F
3%
86-87°F
<1%
88-89°F
<1%
90°F or higher
<1%
78-79°F 44%
80-81°F 28%
76-77°F 19%
82-83°F 6%
NEW
NEW
Aug 11, 2026
71°F or below
$20 Vol.
1%
72-73°F
$64 Vol.
1%
74-75°F
$18 Vol.
6%
76-77°F
$38 Vol.
19%
78-79°F
$52 Vol.
44%
80-81°F
$30 Vol.
28%
82-83°F
$59 Vol.
6%
84-85°F
$25 Vol.
3%
86-87°F
$115 Vol.
<1%
88-89°F
$109 Vol.
<1%
90°F or higher
$82 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.National Weather Service guidance and ensemble models indicate a daily maximum near 77–79°F for Seattle on August 11, shaped by a moderating marine layer and onshore flow that caps daytime heating after morning cloud cover. This aligns with August climatology at Sea-Tac, where the median high is about 76°F, though 2026’s broader summer warmth has kept conditions modestly above normal. Traders assign the highest implied probability (44.5%) to 78–79°F because recent model runs show limited potential for stronger ridging or offshore flow that could push readings into the low 80s, while the chance of cooler marine influence keeps lower bins like 76–77°F in play at 18.5%. Updated forecasts ahead of the 24-hour window will determine final resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 9, 2026, 9:03 PM ET
Volume
$611End Date
Aug 11, 2026Market Opened
Aug 9, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.National Weather Service guidance and ensemble models indicate a daily maximum near 77–79°F for Seattle on August 11, shaped by a moderating marine layer and onshore flow that caps daytime heating after morning cloud cover. This aligns with August climatology at Sea-Tac, where the median high is about 76°F, though 2026’s broader summer warmth has kept conditions modestly above normal. Traders assign the highest implied probability (44.5%) to 78–79°F because recent model runs show limited potential for stronger ridging or offshore flow that could push readings into the low 80s, while the chance of cooler marine influence keeps lower bins like 76–77°F in play at 18.5%. Updated forecasts ahead of the 24-hour window will determine final resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
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 11 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Seattle-Tacoma International Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$611End Date
Aug 11, 2026Market Opened
Aug 9, 2026, 9:03 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...National Weather Service guidance and ensemble models indicate a daily maximum near 77–79°F for Seattle on August 11, shaped by a moderating marine layer and onshore flow that caps daytime heating after morning cloud cover. This aligns with August climatology at Sea-Tac, where the median high is about 76°F, though 2026’s broader summer warmth has kept conditions modestly above normal. Traders assign the highest implied probability (44.5%) to 78–79°F because recent model runs show limited potential for stronger ridging or offshore flow that could push readings into the low 80s, while the chance of cooler marine influence keeps lower bins like 76–77°F in play at 18.5%. Updated forecasts ahead of the 24-hour window will determine final resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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