Recent National Weather Service forecasts for Seattle on September 9 project a minimum near 54°F under high pressure, clear to partly cloudy skies, and light northerly winds favoring radiational cooling overnight. This aligns with early-September climatology, where average lows hover around 53–54°F amid moderating marine air and minimal cloud cover or precipitation. Model consensus shows little variability in steering patterns or frontal passages through midweek, though slight differences in boundary-layer moisture or wind speeds could shift overnight minima by 1–2°F. With the market's top bins clustered tightly around 52–57°F, traders are weighing these stable high-pressure dynamics against minor forecast adjustments expected in the next model runs.
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 9?
52-53°F 48%
54-55°F 35%
56-57°F 29%
50-51°F 18%
47°F or below
14%
48-49°F
15%
50-51°F
18%
52-53°F
48%
54-55°F
35%
56-57°F
29%
58-59°F
17%
60-61°F
16%
62-63°F
16%
64-65°F
16%
66°F or higher
14%
52-53°F 48%
54-55°F 35%
56-57°F 29%
50-51°F 18%
47°F or below
14%
48-49°F
15%
50-51°F
18%
52-53°F
48%
54-55°F
35%
56-57°F
29%
58-59°F
17%
60-61°F
16%
62-63°F
16%
64-65°F
16%
66°F or higher
14%
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 7, 2026, 7:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...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...Recent National Weather Service forecasts for Seattle on September 9 project a minimum near 54°F under high pressure, clear to partly cloudy skies, and light northerly winds favoring radiational cooling overnight. This aligns with early-September climatology, where average lows hover around 53–54°F amid moderating marine air and minimal cloud cover or precipitation. Model consensus shows little variability in steering patterns or frontal passages through midweek, though slight differences in boundary-layer moisture or wind speeds could shift overnight minima by 1–2°F. With the market's top bins clustered tightly around 52–57°F, traders are weighing these stable high-pressure dynamics against minor forecast adjustments expected in the next model runs.
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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