Latest National Weather Service forecasts position a mid-70s high as the leading outcome for Seattle on August 31, with model consensus showing mostly sunny skies, light northerly winds, and limited marine-layer influence allowing peak solar heating. These conditions align with late-August climatology, where average highs near 75°F reflect the balance between daytime insolation and coastal cooling. Recent model runs have stabilized around 72–75°F, narrowing the distribution and elevating the 74–75°F bin to over 50% implied probability while capping upside risk from stronger offshore flow or clearer subsidence. Final resolution depends on official observations, typically at Seattle-Tacoma International Airport, with any last-minute shifts in cloud cover or wind direction able to adjust the peak within the 72–77°F range.
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 51%
76-77°F 29%
72-73°F 14%
78-79°F 6%
NEW
NEW
Aug 31, 2026
63°F or below
<1%
64-65°F
<1%
66-67°F
1%
68-69°F
1%
70-71°F
3%
72-73°F
14%
74-75°F
51%
76-77°F
29%
78-79°F
6%
80-81°F
<1%
82°F or higher
<1%
74-75°F 51%
76-77°F 29%
72-73°F 14%
78-79°F 6%
NEW
NEW
Aug 31, 2026
63°F or below
$133 Vol.
<1%
64-65°F
$155 Vol.
<1%
66-67°F
$205 Vol.
1%
68-69°F
$146 Vol.
1%
70-71°F
$194 Vol.
3%
72-73°F
$1,886 Vol.
14%
74-75°F
$1,512 Vol.
51%
76-77°F
$773 Vol.
29%
78-79°F
$461 Vol.
6%
80-81°F
$195 Vol.
<1%
82°F or higher
$206 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.Latest National Weather Service forecasts position a mid-70s high as the leading outcome for Seattle on August 31, with model consensus showing mostly sunny skies, light northerly winds, and limited marine-layer influence allowing peak solar heating. These conditions align with late-August climatology, where average highs near 75°F reflect the balance between daytime insolation and coastal cooling. Recent model runs have stabilized around 72–75°F, narrowing the distribution and elevating the 74–75°F bin to over 50% implied probability while capping upside risk from stronger offshore flow or clearer subsidence. Final resolution depends on official observations, typically at Seattle-Tacoma International Airport, with any last-minute shifts in cloud cover or wind direction able to adjust the peak within the 72–77°F range.
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
$5,868End 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.Latest National Weather Service forecasts position a mid-70s high as the leading outcome for Seattle on August 31, with model consensus showing mostly sunny skies, light northerly winds, and limited marine-layer influence allowing peak solar heating. These conditions align with late-August climatology, where average highs near 75°F reflect the balance between daytime insolation and coastal cooling. Recent model runs have stabilized around 72–75°F, narrowing the distribution and elevating the 74–75°F bin to over 50% implied probability while capping upside risk from stronger offshore flow or clearer subsidence. Final resolution depends on official observations, typically at Seattle-Tacoma International Airport, with any last-minute shifts in cloud cover or wind direction able to adjust the peak within the 72–77°F range.
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
$5,868End Date
Aug 31, 2026Market Opened
Aug 29, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Latest National Weather Service forecasts position a mid-70s high as the leading outcome for Seattle on August 31, with model consensus showing mostly sunny skies, light northerly winds, and limited marine-layer influence allowing peak solar heating. These conditions align with late-August climatology, where average highs near 75°F reflect the balance between daytime insolation and coastal cooling. Recent model runs have stabilized around 72–75°F, narrowing the distribution and elevating the 74–75°F bin to over 50% implied probability while capping upside risk from stronger offshore flow or clearer subsidence. Final resolution depends on official observations, typically at Seattle-Tacoma International Airport, with any last-minute shifts in cloud cover or wind direction able to adjust the peak within the 72–77°F range.
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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