Forecast models from sources including the National Weather Service and private providers show Seattle overnight lows on September 6–7 settling in the mid-50s°F, aligning with the market’s tight clustering around 54–57°F bins. Light southerly winds, increasing cloud cover during the night, and typical marine moderation from Puget Sound limit radiative cooling compared to clearer inland sites. Historical climatology places the September 7 average low at 54.5°F, providing context for why traders assign low probability to sub-52°F or 58°F+ outcomes. Minor model spread in cloud timing and boundary-layer mixing creates the near-even split between the two leading ranges, with resolution hinging on the precise minimum recorded at official stations.
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 7?
56-57°F 44%
52-53°F 43%
54-55°F 39%
58-59°F 23%
47°F or below
13%
48-49°F
16%
50-51°F
17%
52-53°F
43%
54-55°F
39%
56-57°F
44%
58-59°F
23%
60-61°F
15%
62-63°F
15%
64-65°F
16%
66°F or higher
8%
56-57°F 44%
52-53°F 43%
54-55°F 39%
58-59°F 23%
47°F or below
13%
48-49°F
16%
50-51°F
17%
52-53°F
43%
54-55°F
39%
56-57°F
44%
58-59°F
23%
60-61°F
15%
62-63°F
15%
64-65°F
16%
66°F or higher
8%
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 5, 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...Forecast models from sources including the National Weather Service and private providers show Seattle overnight lows on September 6–7 settling in the mid-50s°F, aligning with the market’s tight clustering around 54–57°F bins. Light southerly winds, increasing cloud cover during the night, and typical marine moderation from Puget Sound limit radiative cooling compared to clearer inland sites. Historical climatology places the September 7 average low at 54.5°F, providing context for why traders assign low probability to sub-52°F or 58°F+ outcomes. Minor model spread in cloud timing and boundary-layer mixing creates the near-even split between the two leading ranges, with resolution hinging on the precise minimum recorded at official stations.
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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