Recent National Weather Service and model guidance indicate clear skies and high pressure building over the Pacific Northwest, favoring radiative cooling overnight into September 17 with a forecast low near the seasonal average of 52.9 °F at Sea-Tac. Multiple runs project overnight minima of 52–53 °F under light northeast winds and dew points in the low 50s, supporting the market’s leading 54–55 °F and 52–53 °F bins. Dry conditions and minimal cloud cover reduce the chance of warmer advection or fog that could elevate the low, while historical analogs show similar setups rarely dip below 50 °F this early in fall. Updated model runs and any evening surface observations ahead of the overnight minimum will be the next key inputs for traders.
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 17?
Lowest temperature in Seattle on September 17?
56-57°F 40%
54-55°F 36%
52-53°F 22%
50-51°F 19%
NEW
NEW
Sep 17, 2026
45°F or below
5%
46-47°F
7%
48-49°F
11%
50-51°F
19%
52-53°F
22%
54-55°F
36%
56-57°F
40%
58-59°F
18%
60-61°F
11%
62-63°F
7%
64°F or higher
5%
56-57°F 40%
54-55°F 36%
52-53°F 22%
50-51°F 19%
NEW
NEW
Sep 17, 2026
45°F or below
$0 Vol.
5%
46-47°F
$0 Vol.
7%
48-49°F
$0 Vol.
11%
50-51°F
$0 Vol.
19%
52-53°F
$0 Vol.
22%
54-55°F
$0 Vol.
36%
56-57°F
$0 Vol.
40%
58-59°F
$0 Vol.
18%
60-61°F
$0 Vol.
11%
62-63°F
$0 Vol.
7%
64°F or higher
$0 Vol.
5%
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 17 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 and model guidance indicate clear skies and high pressure building over the Pacific Northwest, favoring radiative cooling overnight into September 17 with a forecast low near the seasonal average of 52.9 °F at Sea-Tac. Multiple runs project overnight minima of 52–53 °F under light northeast winds and dew points in the low 50s, supporting the market’s leading 54–55 °F and 52–53 °F bins. Dry conditions and minimal cloud cover reduce the chance of warmer advection or fog that could elevate the low, while historical analogs show similar setups rarely dip below 50 °F this early in fall. Updated model runs and any evening surface observations ahead of the overnight minimum will be the next key inputs for traders.
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 17 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 15, 2026, 7:29 AM ET
Volume
$0End Date
Sep 17, 2026Market Opened
Sep 15, 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 17 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 and model guidance indicate clear skies and high pressure building over the Pacific Northwest, favoring radiative cooling overnight into September 17 with a forecast low near the seasonal average of 52.9 °F at Sea-Tac. Multiple runs project overnight minima of 52–53 °F under light northeast winds and dew points in the low 50s, supporting the market’s leading 54–55 °F and 52–53 °F bins. Dry conditions and minimal cloud cover reduce the chance of warmer advection or fog that could elevate the low, while historical analogs show similar setups rarely dip below 50 °F this early in fall. Updated model runs and any evening surface observations ahead of the overnight minimum will be the next key inputs for traders.
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 17 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
$0End Date
Sep 17, 2026Market Opened
Sep 15, 2026, 7:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Recent National Weather Service and model guidance indicate clear skies and high pressure building over the Pacific Northwest, favoring radiative cooling overnight into September 17 with a forecast low near the seasonal average of 52.9 °F at Sea-Tac. Multiple runs project overnight minima of 52–53 °F under light northeast winds and dew points in the low 50s, supporting the market’s leading 54–55 °F and 52–53 °F bins. Dry conditions and minimal cloud cover reduce the chance of warmer advection or fog that could elevate the low, while historical analogs show similar setups rarely dip below 50 °F this early in fall. Updated model runs and any evening surface observations ahead of the overnight minimum will be the next key inputs for traders.
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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