Recent National Weather Service and ensemble model guidance points to partly sunny conditions with light northerly winds moderating Seattle's high temperature on September 5 into the upper 60s to low 70s. Persistent marine layer influence and variable afternoon cloud cover create the tight clustering around 66–71°F, as even modest increases in insolation or delayed clearing could push readings across the 69–70°F threshold. This setup aligns closely with early-September climatology near 70°F, where small differences in boundary-layer mixing and sea-breeze timing produce the observed market balance rather than a dominant outlier. Updated model runs and midday observations on September 4 will refine the exact ceiling.
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 5?
Highest temperature in Seattle on September 5?
68-69°F 34%
66-67°F 25%
70-71°F 25%
64-65°F 11%
NEW
NEW
Sep 5, 2026
59°F or below
1%
60-61°F
4%
62-63°F
3%
64-65°F
11%
66-67°F
24%
68-69°F
34%
70-71°F
25%
72-73°F
8%
74-75°F
4%
76-77°F
2%
78°F or higher
2%
68-69°F 34%
66-67°F 25%
70-71°F 25%
64-65°F 11%
NEW
NEW
Sep 5, 2026
59°F or below
$25 Vol.
1%
60-61°F
$0 Vol.
4%
62-63°F
$76 Vol.
3%
64-65°F
$10 Vol.
11%
66-67°F
$12 Vol.
24%
68-69°F
$0 Vol.
34%
70-71°F
$0 Vol.
25%
72-73°F
$50 Vol.
8%
74-75°F
$0 Vol.
4%
76-77°F
$0 Vol.
2%
78°F or higher
$0 Vol.
2%
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 5 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 ensemble model guidance points to partly sunny conditions with light northerly winds moderating Seattle's high temperature on September 5 into the upper 60s to low 70s. Persistent marine layer influence and variable afternoon cloud cover create the tight clustering around 66–71°F, as even modest increases in insolation or delayed clearing could push readings across the 69–70°F threshold. This setup aligns closely with early-September climatology near 70°F, where small differences in boundary-layer mixing and sea-breeze timing produce the observed market balance rather than a dominant outlier. Updated model runs and midday observations on September 4 will refine the exact ceiling.
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 5 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 3, 2026, 7:55 AM ET
Volume
$173End Date
Sep 5, 2026Market Opened
Sep 3, 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 5 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 ensemble model guidance points to partly sunny conditions with light northerly winds moderating Seattle's high temperature on September 5 into the upper 60s to low 70s. Persistent marine layer influence and variable afternoon cloud cover create the tight clustering around 66–71°F, as even modest increases in insolation or delayed clearing could push readings across the 69–70°F threshold. This setup aligns closely with early-September climatology near 70°F, where small differences in boundary-layer mixing and sea-breeze timing produce the observed market balance rather than a dominant outlier. Updated model runs and midday observations on September 4 will refine the exact ceiling.
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 5 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
$173End Date
Sep 5, 2026Market Opened
Sep 3, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Recent National Weather Service and ensemble model guidance points to partly sunny conditions with light northerly winds moderating Seattle's high temperature on September 5 into the upper 60s to low 70s. Persistent marine layer influence and variable afternoon cloud cover create the tight clustering around 66–71°F, as even modest increases in insolation or delayed clearing could push readings across the 69–70°F threshold. This setup aligns closely with early-September climatology near 70°F, where small differences in boundary-layer mixing and sea-breeze timing produce the observed market balance rather than a dominant outlier. Updated model runs and midday observations on September 4 will refine the exact ceiling.
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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