Forecast consensus from National Weather Service and global models centers the Seattle high on August 31 near 72–75 °F under mostly sunny skies and light northerly flow after weekend showers clear. This range aligns with the market’s tightest probabilities (74–75 °F at 30.5 %, 76–77 °F at 28.5 %, 72–73 °F at 24 %), reflecting modest ensemble spread in boundary-layer mixing and marine-layer erosion. Late-August climatology shows a 74.5 °F average high at Sea-Tac, providing a neutral baseline against which current dry, stable conditions offer limited upside. Key variables for final resolution remain afternoon wind speed and cloud-cover evolution, with next model runs and the 31 August NWS update likely to narrow the outcome distribution before market close.
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 31?
Highest temperature in Seattle on August 31?
74-75°F 36%
76-77°F 29%
72-73°F 24%
70-71°F 17%
NEW
NEW
Aug 31, 2026
63°F or below
1%
64-65°F
2%
66-67°F
4%
68-69°F
8%
70-71°F
17%
72-73°F
24%
74-75°F
32%
76-77°F
29%
78-79°F
7%
80-81°F
<1%
82°F or higher
<1%
74-75°F 36%
76-77°F 29%
72-73°F 24%
70-71°F 17%
NEW
NEW
Aug 31, 2026
63°F or below
$0 Vol.
1%
64-65°F
$0 Vol.
2%
66-67°F
$0 Vol.
4%
68-69°F
$0 Vol.
8%
70-71°F
$0 Vol.
17%
72-73°F
$85 Vol.
24%
74-75°F
$9 Vol.
32%
76-77°F
$44 Vol.
29%
78-79°F
$0 Vol.
7%
80-81°F
$0 Vol.
<1%
82°F or higher
$0 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 31 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.Forecast consensus from National Weather Service and global models centers the Seattle high on August 31 near 72–75 °F under mostly sunny skies and light northerly flow after weekend showers clear. This range aligns with the market’s tightest probabilities (74–75 °F at 30.5 %, 76–77 °F at 28.5 %, 72–73 °F at 24 %), reflecting modest ensemble spread in boundary-layer mixing and marine-layer erosion. Late-August climatology shows a 74.5 °F average high at Sea-Tac, providing a neutral baseline against which current dry, stable conditions offer limited upside. Key variables for final resolution remain afternoon wind speed and cloud-cover evolution, with next model runs and the 31 August NWS update likely to narrow the outcome distribution before market close.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 31 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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 29, 2026, 7:55 AM ET
Volume
$138End Date
Aug 31, 2026Market Opened
Aug 29, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 31 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.Forecast consensus from National Weather Service and global models centers the Seattle high on August 31 near 72–75 °F under mostly sunny skies and light northerly flow after weekend showers clear. This range aligns with the market’s tightest probabilities (74–75 °F at 30.5 %, 76–77 °F at 28.5 %, 72–73 °F at 24 %), reflecting modest ensemble spread in boundary-layer mixing and marine-layer erosion. Late-August climatology shows a 74.5 °F average high at Sea-Tac, providing a neutral baseline against which current dry, stable conditions offer limited upside. Key variables for final resolution remain afternoon wind speed and cloud-cover evolution, with next model runs and the 31 August NWS update likely to narrow the outcome distribution before market close.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 31 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksea
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
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
$138End Date
Aug 31, 2026Market Opened
Aug 29, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Forecast consensus from National Weather Service and global models centers the Seattle high on August 31 near 72–75 °F under mostly sunny skies and light northerly flow after weekend showers clear. This range aligns with the market’s tightest probabilities (74–75 °F at 30.5 %, 76–77 °F at 28.5 %, 72–73 °F at 24 %), reflecting modest ensemble spread in boundary-layer mixing and marine-layer erosion. Late-August climatology shows a 74.5 °F average high at Sea-Tac, providing a neutral baseline against which current dry, stable conditions offer limited upside. Key variables for final resolution remain afternoon wind speed and cloud-cover evolution, with next model runs and the 31 August NWS update likely to narrow the outcome distribution before market close.
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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