**Trader sentiment for Seattle's September 5, 2026, low temperature centers on mild marine-influenced conditions typical of early fall in the Pacific Northwest.** Official National Weather Service observations recorded a minimum of 52°F at Seattle-Tacoma International Airport, matching pre-event forecasts that consistently projected overnight lows in the low-to-mid 50s under partly cloudy to clear skies and light winds. Key drivers include the moderating effect of the nearby Pacific Ocean, which limits radiational cooling, combined with the absence of strong high pressure, northerly flow, or clear, calm conditions that could produce sharper drops. The observed value sits slightly below the 1991–2020 climatological average low of ~54.8°F but well above historical extremes such as the all-time September 5 record low of 44°F (1950). Recent days featured similar patterns with highs in the 70s and minimal precipitation, reinforcing model consensus around 52°F and keeping implied probabilities highest for the 52–53°F bin. Upcoming or post-event data releases, such as finalized NWS climate reports, are unlikely to shift resolution given the consistency across stations and forecasts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Seattle on September 5?
52-53°F 99.5%
48-49°F 18%
46-47°F 15%
45°F or below 1.0%
$676 Vol.
$676 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
Yes
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64°F or higher
No
52-53°F 99.5%
48-49°F 18%
46-47°F 15%
45°F or below 1.0%
$676 Vol.
$676 Vol.
45°F or below
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
Yes
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64°F or higher
No
The resolution source for this market will be information from NOAA, specifically the lowest 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, 7:29 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 lowest 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
**Trader sentiment for Seattle's September 5, 2026, low temperature centers on mild marine-influenced conditions typical of early fall in the Pacific Northwest.** Official National Weather Service observations recorded a minimum of 52°F at Seattle-Tacoma International Airport, matching pre-event forecasts that consistently projected overnight lows in the low-to-mid 50s under partly cloudy to clear skies and light winds. Key drivers include the moderating effect of the nearby Pacific Ocean, which limits radiational cooling, combined with the absence of strong high pressure, northerly flow, or clear, calm conditions that could produce sharper drops. The observed value sits slightly below the 1991–2020 climatological average low of ~54.8°F but well above historical extremes such as the all-time September 5 record low of 44°F (1950). Recent days featured similar patterns with highs in the 70s and minimal precipitation, reinforcing model consensus around 52°F and keeping implied probabilities highest for the 52–53°F bin. Upcoming or post-event data releases, such as finalized NWS climate reports, are unlikely to shift resolution given the consistency across stations and forecasts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions