National Weather Service forecasts and ensemble guidance anchor trader sentiment for Seattle’s August 15 high near 76–79 °F, reflecting moderate zonal flow aloft and persistent onshore marine air that limits daytime heating. Typical August averages hover around 76 °F, but the marine layer and westerly winds from Puget Sound frequently cap peaks below inland norms, consistent with the strong 49 % market-implied probability on 76–77 °F and 30 % on 74–75 °F. Recent model runs show limited warming potential despite the broader warmer-than-average Pacific Northwest summer, keeping higher bins (80 °F+) at low single-digit odds. Official observations from the primary reporting station will resolve the market once the daily maximum is recorded.
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 15?
Highest temperature in Seattle on August 15?
76-77°F 52%
74-75°F 30%
78-79°F 12%
80-81°F 5%
NEW
$17,955 Vol.
NEW
$17,955 Vol.
Aug 15, 2026
73°F or below
4%
74-75°F
30%
76-77°F
52%
78-79°F
12%
80-81°F
5%
82-83°F
2%
84-85°F
<1%
86-87°F
<1%
88-89°F
<1%
90-91°F
<1%
92°F or higher
<1%
76-77°F 52%
74-75°F 30%
78-79°F 12%
80-81°F 5%
NEW
$17,955 Vol.
NEW
$17,955 Vol.
Aug 15, 2026
73°F or below
$5,098 Vol.
4%
74-75°F
$2,749 Vol.
30%
76-77°F
$2,604 Vol.
52%
78-79°F
$2,178 Vol.
12%
80-81°F
$2,022 Vol.
5%
82-83°F
$816 Vol.
2%
84-85°F
$1,186 Vol.
<1%
86-87°F
$720 Vol.
<1%
88-89°F
$317 Vol.
<1%
90-91°F
$315 Vol.
<1%
92°F or higher
$361 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 15 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 forecasts and ensemble guidance anchor trader sentiment for Seattle’s August 15 high near 76–79 °F, reflecting moderate zonal flow aloft and persistent onshore marine air that limits daytime heating. Typical August averages hover around 76 °F, but the marine layer and westerly winds from Puget Sound frequently cap peaks below inland norms, consistent with the strong 49 % market-implied probability on 76–77 °F and 30 % on 74–75 °F. Recent model runs show limited warming potential despite the broader warmer-than-average Pacific Northwest summer, keeping higher bins (80 °F+) at low single-digit odds. Official observations from the primary reporting station will resolve the market once the daily maximum is recorded.
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 15 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 15 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 13, 2026, 8:56 PM ET
Volume
$17,955End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 8:56 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 15 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 forecasts and ensemble guidance anchor trader sentiment for Seattle’s August 15 high near 76–79 °F, reflecting moderate zonal flow aloft and persistent onshore marine air that limits daytime heating. Typical August averages hover around 76 °F, but the marine layer and westerly winds from Puget Sound frequently cap peaks below inland norms, consistent with the strong 49 % market-implied probability on 76–77 °F and 30 % on 74–75 °F. Recent model runs show limited warming potential despite the broader warmer-than-average Pacific Northwest summer, keeping higher bins (80 °F+) at low single-digit odds. Official observations from the primary reporting station will resolve the market once the daily maximum is recorded.
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 15 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 15 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
$17,955End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 8:56 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...National Weather Service forecasts and ensemble guidance anchor trader sentiment for Seattle’s August 15 high near 76–79 °F, reflecting moderate zonal flow aloft and persistent onshore marine air that limits daytime heating. Typical August averages hover around 76 °F, but the marine layer and westerly winds from Puget Sound frequently cap peaks below inland norms, consistent with the strong 49 % market-implied probability on 76–77 °F and 30 % on 74–75 °F. Recent model runs show limited warming potential despite the broader warmer-than-average Pacific Northwest summer, keeping higher bins (80 °F+) at low single-digit odds. Official observations from the primary reporting station will resolve the market once the daily maximum is recorded.
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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