Recent National Weather Service model guidance and local observations indicate a cooling trend into late September, with Seattle-Tacoma Airport temperatures running 2–4°F below seasonal normals amid increased cloud cover and scattered showers. Ensemble forecasts show overnight lows on September 25 clustered near 47–51°F, where radiational cooling under partial clearing could push minima into the mid-40s while persistent marine layer or precipitation would hold them near 50°F. This narrow range and modest model spread around the 45°F threshold drive the near-even market split between sub-46°F and 64°F+ outcomes, with traders weighting the latest 00Z and 12Z runs from the National Centers for Environmental Prediction. Updated NWS Seattle forecast discussions and hourly observations through September 24 will provide the next key inputs before resolution.
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 25?
Lowest temperature in Seattle on September 25?
64°F or higher 92%
52-53°F 48%
45°F or below 42%
56-57°F 39%
NEW
NEW
Sep 25, 2026
45°F or below
42%
46-47°F
20%
48-49°F
20%
50-51°F
21%
52-53°F
48%
54-55°F
21%
56-57°F
39%
58-59°F
1%
60-61°F
39%
62-63°F
39%
64°F or higher
92%
64°F or higher 92%
52-53°F 48%
45°F or below 42%
56-57°F 39%
NEW
NEW
Sep 25, 2026
45°F or below
$0 Vol.
42%
46-47°F
$0 Vol.
20%
48-49°F
$0 Vol.
20%
50-51°F
$0 Vol.
21%
52-53°F
$0 Vol.
48%
54-55°F
$0 Vol.
21%
56-57°F
$10 Vol.
39%
58-59°F
$10 Vol.
1%
60-61°F
$10 Vol.
39%
62-63°F
$10 Vol.
39%
64°F or higher
$10 Vol.
92%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 25 Sep '26.
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.Recent National Weather Service model guidance and local observations indicate a cooling trend into late September, with Seattle-Tacoma Airport temperatures running 2–4°F below seasonal normals amid increased cloud cover and scattered showers. Ensemble forecasts show overnight lows on September 25 clustered near 47–51°F, where radiational cooling under partial clearing could push minima into the mid-40s while persistent marine layer or precipitation would hold them near 50°F. This narrow range and modest model spread around the 45°F threshold drive the near-even market split between sub-46°F and 64°F+ outcomes, with traders weighting the latest 00Z and 12Z runs from the National Centers for Environmental Prediction. Updated NWS Seattle forecast discussions and hourly observations through September 24 will provide the next key inputs before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 25 Sep '26.
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.
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 23, 2026, 7:29 AM ET
Volume
$50End Date
Sep 25, 2026Market Opened
Sep 23, 2026, 7:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 25 Sep '26.
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.Recent National Weather Service model guidance and local observations indicate a cooling trend into late September, with Seattle-Tacoma Airport temperatures running 2–4°F below seasonal normals amid increased cloud cover and scattered showers. Ensemble forecasts show overnight lows on September 25 clustered near 47–51°F, where radiational cooling under partial clearing could push minima into the mid-40s while persistent marine layer or precipitation would hold them near 50°F. This narrow range and modest model spread around the 45°F threshold drive the near-even market split between sub-46°F and 64°F+ outcomes, with traders weighting the latest 00Z and 12Z runs from the National Centers for Environmental Prediction. Updated NWS Seattle forecast discussions and hourly observations through September 24 will provide the next key inputs before resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 25 Sep '26.
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.
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.
Volume
$50End Date
Sep 25, 2026Market Opened
Sep 23, 2026, 7:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Recent National Weather Service model guidance and local observations indicate a cooling trend into late September, with Seattle-Tacoma Airport temperatures running 2–4°F below seasonal normals amid increased cloud cover and scattered showers. Ensemble forecasts show overnight lows on September 25 clustered near 47–51°F, where radiational cooling under partial clearing could push minima into the mid-40s while persistent marine layer or precipitation would hold them near 50°F. This narrow range and modest model spread around the 45°F threshold drive the near-even market split between sub-46°F and 64°F+ outcomes, with traders weighting the latest 00Z and 12Z runs from the National Centers for Environmental Prediction. Updated NWS Seattle forecast discussions and hourly observations through September 24 will provide the next key inputs 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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