Recent National Weather Service and private forecast models converge on a high near 74–76°F for Seattle on September 17 under clear skies and light northerly flow. Persistent high pressure and minimal cloud cover are enabling strong daytime insolation with low humidity and little vertical mixing, supporting temperatures several degrees above the late-September climatological normal of roughly 70°F. Light winds from the north are limiting marine influence from Puget Sound while allowing efficient surface heating. The 74–75°F bin leads market-implied odds because ensemble guidance shows limited upside potential for 78°F+ without unexpected warming aloft, and downside risk remains low absent any coastal stratus intrusion. Updated model runs tomorrow morning will refine the exact maximum before resolution.
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 17?
Highest temperature in Seattle on September 17?
74-75°F 51%
76-77°F 25%
72-73°F 11%
78-79°F 5%
NEW
NEW
Sep 17, 2026
65°F or below
2%
66-67°F
1%
68-69°F
2%
70-71°F
4%
72-73°F
11%
74-75°F
51%
76-77°F
25%
78-79°F
5%
80-81°F
2%
82-83°F
2%
84°F or higher
<1%
74-75°F 51%
76-77°F 25%
72-73°F 11%
78-79°F 5%
NEW
NEW
Sep 17, 2026
65°F or below
$0 Vol.
2%
66-67°F
$23 Vol.
1%
68-69°F
$109 Vol.
2%
70-71°F
$186 Vol.
4%
72-73°F
$843 Vol.
11%
74-75°F
$370 Vol.
51%
76-77°F
$451 Vol.
25%
78-79°F
$115 Vol.
5%
80-81°F
$0 Vol.
2%
82-83°F
$0 Vol.
2%
84°F or higher
$1,039 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 17 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.Recent National Weather Service and private forecast models converge on a high near 74–76°F for Seattle on September 17 under clear skies and light northerly flow. Persistent high pressure and minimal cloud cover are enabling strong daytime insolation with low humidity and little vertical mixing, supporting temperatures several degrees above the late-September climatological normal of roughly 70°F. Light winds from the north are limiting marine influence from Puget Sound while allowing efficient surface heating. The 74–75°F bin leads market-implied odds because ensemble guidance shows limited upside potential for 78°F+ without unexpected warming aloft, and downside risk remains low absent any coastal stratus intrusion. Updated model runs tomorrow morning will refine the exact maximum before resolution.
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 17 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 15, 2026, 7:55 AM ET
Volume
$3,138End Date
Sep 17, 2026Market Opened
Sep 15, 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 17 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.Recent National Weather Service and private forecast models converge on a high near 74–76°F for Seattle on September 17 under clear skies and light northerly flow. Persistent high pressure and minimal cloud cover are enabling strong daytime insolation with low humidity and little vertical mixing, supporting temperatures several degrees above the late-September climatological normal of roughly 70°F. Light winds from the north are limiting marine influence from Puget Sound while allowing efficient surface heating. The 74–75°F bin leads market-implied odds because ensemble guidance shows limited upside potential for 78°F+ without unexpected warming aloft, and downside risk remains low absent any coastal stratus intrusion. Updated model runs tomorrow morning will refine the exact maximum before resolution.
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 17 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
$3,138End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Recent National Weather Service and private forecast models converge on a high near 74–76°F for Seattle on September 17 under clear skies and light northerly flow. Persistent high pressure and minimal cloud cover are enabling strong daytime insolation with low humidity and little vertical mixing, supporting temperatures several degrees above the late-September climatological normal of roughly 70°F. Light winds from the north are limiting marine influence from Puget Sound while allowing efficient surface heating. The 74–75°F bin leads market-implied odds because ensemble guidance shows limited upside potential for 78°F+ without unexpected warming aloft, and downside risk remains low absent any coastal stratus intrusion. Updated model runs tomorrow morning will refine the exact maximum before resolution.
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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