Official temperature observations from Seattle-Tacoma International Airport placed the September 3 high at 68–69°F, aligning with the market’s near-certain consensus. This value fell below the 1991–2020 climatological average of 73.6°F amid persistent cloud cover, light northerly flow, and residual moisture from earlier showers that limited daytime heating. National Weather Service summaries and preliminary climatological reports confirm the reading through standard instrumentation and quality control. A shift in market-implied odds would require a verified revision to the official daily maximum or a change in station reporting protocols, both rare once preliminary data undergo final review.
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 3?
68-69°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$53,861 Vol.
$53,861 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72-73°F
No
74°F or higher
No
68-69°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$53,861 Vol.
$53,861 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72-73°F
No
74°F or higher
No
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 1, 2026, 7:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official temperature observations from Seattle-Tacoma International Airport placed the September 3 high at 68–69°F, aligning with the market’s near-certain consensus. This value fell below the 1991–2020 climatological average of 73.6°F amid persistent cloud cover, light northerly flow, and residual moisture from earlier showers that limited daytime heating. National Weather Service summaries and preliminary climatological reports confirm the reading through standard instrumentation and quality control. A shift in market-implied odds would require a verified revision to the official daily maximum or a change in station reporting protocols, both rare once preliminary data undergo final review.
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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Frequently Asked Questions