**Forecast consensus from National Weather Service and private models points to a Seattle high in the mid-to-upper 70s on September 9, 2026, driven by an upper-level ridge offshore, light north-northwest flow, and subsidence warming under mostly sunny to partly cloudy skies.** This setup favors temperatures above the September 9 climatological average of 72°F, with morning marine influence and patchy fog giving way to daytime heating. Recent observations (75°F on September 8) and ensemble agreement reinforce the tight clustering around 76–79°F, where market-implied odds concentrate. Official resolution will hinge on the NWS Seattle-Tacoma International Airport reading, with any late-day stratus or wind shifts as the main variables that could nudge the final maximum.
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 September 9?
Highest temperature in Seattle on September 9?
78-79°F 61%
76-77°F 35%
80-81°F 3%
74-75°F 3%
$13,493 Vol.
$13,493 Vol.
Sep 9, 2026
67°F or below
<1%
68-69°F
<1%
70-71°F
1%
72-73°F
2%
74-75°F
3%
76-77°F
35%
78-79°F
61%
80-81°F
3%
82-83°F
<1%
84-85°F
<1%
86°F or higher
<1%
78-79°F 61%
76-77°F 35%
80-81°F 3%
74-75°F 3%
$13,493 Vol.
$13,493 Vol.
Sep 9, 2026
67°F or below
$979 Vol.
<1%
68-69°F
$366 Vol.
<1%
70-71°F
$1,238 Vol.
1%
72-73°F
$883 Vol.
2%
74-75°F
$1,943 Vol.
3%
76-77°F
$2,586 Vol.
35%
78-79°F
$2,785 Vol.
61%
80-81°F
$1,126 Vol.
3%
82-83°F
$663 Vol.
<1%
84-85°F
$348 Vol.
<1%
86°F or higher
$576 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 9 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 private models points to a Seattle high in the mid-to-upper 70s on September 9, 2026, driven by an upper-level ridge offshore, light north-northwest flow, and subsidence warming under mostly sunny to partly cloudy skies.** This setup favors temperatures above the September 9 climatological average of 72°F, with morning marine influence and patchy fog giving way to daytime heating. Recent observations (75°F on September 8) and ensemble agreement reinforce the tight clustering around 76–79°F, where market-implied odds concentrate. Official resolution will hinge on the NWS Seattle-Tacoma International Airport reading, with any late-day stratus or wind shifts as the main variables that could nudge the final maximum.
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 9 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 7, 2026, 7:55 AM ET
Volume
$13,493End Date
Sep 9, 2026Market Opened
Sep 7, 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 9 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 private models points to a Seattle high in the mid-to-upper 70s on September 9, 2026, driven by an upper-level ridge offshore, light north-northwest flow, and subsidence warming under mostly sunny to partly cloudy skies.** This setup favors temperatures above the September 9 climatological average of 72°F, with morning marine influence and patchy fog giving way to daytime heating. Recent observations (75°F on September 8) and ensemble agreement reinforce the tight clustering around 76–79°F, where market-implied odds concentrate. Official resolution will hinge on the NWS Seattle-Tacoma International Airport reading, with any late-day stratus or wind shifts as the main variables that could nudge the final maximum.
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 9 Sep '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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$13,493End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...**Forecast consensus from National Weather Service and private models points to a Seattle high in the mid-to-upper 70s on September 9, 2026, driven by an upper-level ridge offshore, light north-northwest flow, and subsidence warming under mostly sunny to partly cloudy skies.** This setup favors temperatures above the September 9 climatological average of 72°F, with morning marine influence and patchy fog giving way to daytime heating. Recent observations (75°F on September 8) and ensemble agreement reinforce the tight clustering around 76–79°F, where market-implied odds concentrate. Official resolution will hinge on the NWS Seattle-Tacoma International Airport reading, with any late-day stratus or wind shifts as the main variables that could nudge the final maximum.
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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