Trader consensus on the Seattle high temperature for September 13 centers on the 64-65°F range at 28.5% implied probability, reflecting the latest National Weather Service and NOAA model guidance showing a moderating marine layer and weak onshore flow keeping daytime maxima near seasonal norms. Ensemble runs indicate limited warming potential from a ridge axis positioned offshore, with 62-63°F and 66-67°F bins capturing the spread from minor timing differences in cloud cover and wind shifts. Historical mid-September climatology for the region averages 68-72°F, but current atmospheric conditions favor cooler outcomes. Updated model cycles and morning soundings expected later today will likely refine these narrow probability bands.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seattle on September 13?
62-63°F 30%
64-65°F 30%
66-67°F 20%
60-61°F 15%
57°F or below
2%
58-59°F
4%
60-61°F
15%
62-63°F
30%
64-65°F
30%
66-67°F
20%
68-69°F
11%
70-71°F
5%
72-73°F
2%
74-75°F
1%
76°F or higher
1%
62-63°F 30%
64-65°F 30%
66-67°F 20%
60-61°F 15%
57°F or below
2%
58-59°F
4%
60-61°F
15%
62-63°F
30%
64-65°F
30%
66-67°F
20%
68-69°F
11%
70-71°F
5%
72-73°F
2%
74-75°F
1%
76°F or higher
1%
The resolution source for this market will be information from NOAA, specifically the highest 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 11, 2026, 7:55 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 highest 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...Trader consensus on the Seattle high temperature for September 13 centers on the 64-65°F range at 28.5% implied probability, reflecting the latest National Weather Service and NOAA model guidance showing a moderating marine layer and weak onshore flow keeping daytime maxima near seasonal norms. Ensemble runs indicate limited warming potential from a ridge axis positioned offshore, with 62-63°F and 66-67°F bins capturing the spread from minor timing differences in cloud cover and wind shifts. Historical mid-September climatology for the region averages 68-72°F, but current atmospheric conditions favor cooler outcomes. Updated model cycles and morning soundings expected later today will likely refine these narrow probability bands.
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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