Recent National Weather Service forecasts and local model consensus for Seattle on August 21 point to a high near 79–81°F under weak ridging and moderate onshore flow from the Pacific, anchoring trader sentiment around the 80–83°F range. This setup limits afternoon heating compared to typical August peaks near 79°F, with the marine layer and light northwest winds moderating temperatures. El Niño strengthening in the tropical Pacific contributes to broader warmer baseline conditions across the Northwest but shows limited direct influence on this short-term pattern. Key upcoming data include the next NWS model runs and afternoon updates, which could shift probabilities if instability or clearer skies develop.
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 21?
Highest temperature in Seattle on August 21?
80-81°F 34%
82-83°F 27%
78-79°F 16%
84-85°F 10%
NEW
NEW
Aug 21, 2026
73°F or below
1%
74-75°F
2%
76-77°F
9%
78-79°F
16%
80-81°F
34%
82-83°F
27%
84-85°F
10%
86-87°F
4%
88-89°F
4%
90-91°F
4%
92°F or higher
<1%
80-81°F 34%
82-83°F 27%
78-79°F 16%
84-85°F 10%
NEW
NEW
Aug 21, 2026
73°F or below
$571 Vol.
1%
74-75°F
$253 Vol.
2%
76-77°F
$342 Vol.
9%
78-79°F
$143 Vol.
16%
80-81°F
$94 Vol.
34%
82-83°F
$281 Vol.
27%
84-85°F
$18 Vol.
10%
86-87°F
$27 Vol.
4%
88-89°F
$27 Vol.
4%
90-91°F
$45 Vol.
4%
92°F or higher
$367 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 21 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.Recent National Weather Service forecasts and local model consensus for Seattle on August 21 point to a high near 79–81°F under weak ridging and moderate onshore flow from the Pacific, anchoring trader sentiment around the 80–83°F range. This setup limits afternoon heating compared to typical August peaks near 79°F, with the marine layer and light northwest winds moderating temperatures. El Niño strengthening in the tropical Pacific contributes to broader warmer baseline conditions across the Northwest but shows limited direct influence on this short-term pattern. Key upcoming data include the next NWS model runs and afternoon updates, which could shift probabilities if instability or clearer skies develop.
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 21 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 21 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 19, 2026, 9:56 PM ET
Volume
$2,167End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 9:56 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 21 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.Recent National Weather Service forecasts and local model consensus for Seattle on August 21 point to a high near 79–81°F under weak ridging and moderate onshore flow from the Pacific, anchoring trader sentiment around the 80–83°F range. This setup limits afternoon heating compared to typical August peaks near 79°F, with the marine layer and light northwest winds moderating temperatures. El Niño strengthening in the tropical Pacific contributes to broader warmer baseline conditions across the Northwest but shows limited direct influence on this short-term pattern. Key upcoming data include the next NWS model runs and afternoon updates, which could shift probabilities if instability or clearer skies develop.
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 21 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 21 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
$2,167End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 9:56 PM ETResolution Source
https://www.wunderground.com/history/daily/us/wa/seatac/KSEAResolver
0x69c47De9D...Recent National Weather Service forecasts and local model consensus for Seattle on August 21 point to a high near 79–81°F under weak ridging and moderate onshore flow from the Pacific, anchoring trader sentiment around the 80–83°F range. This setup limits afternoon heating compared to typical August peaks near 79°F, with the marine layer and light northwest winds moderating temperatures. El Niño strengthening in the tropical Pacific contributes to broader warmer baseline conditions across the Northwest but shows limited direct influence on this short-term pattern. Key upcoming data include the next NWS model runs and afternoon updates, which could shift probabilities if instability or clearer skies develop.
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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