Persistent rain and extensive cloud cover from a southerly flow of marine air are suppressing Seattle's high temperature on September 13, 2026, to forecast levels near 60°F according to National Weather Service guidance and multiple model runs. This setup contrasts with the 71°F climatological average high, as thick stratiform clouds limit solar heating while steady precipitation and moderate southerly winds enhance evaporative cooling and prevent boundary-layer warming. Recent model consensus shows minimal spread around this outcome, with only slight potential for brief afternoon breaks to reach 62–63°F if clearing occurs earlier than expected. Official observations through midday confirm the cool, saturated airmass remains in place, supporting the market's strong emphasis on the 60–61°F bin as the most probable resolution.
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?
Highest temperature in Seattle on September 13?
60-61°F 51%
62-63°F 23%
58-59°F 16%
64-65°F 7%
NEW
NEW
Sep 13, 2026
57°F or below
4%
58-59°F
16%
60-61°F
51%
62-63°F
23%
64-65°F
7%
66-67°F
2%
68-69°F
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76°F or higher
<1%
60-61°F 51%
62-63°F 23%
58-59°F 16%
64-65°F 7%
NEW
NEW
Sep 13, 2026
57°F or below
$533 Vol.
4%
58-59°F
$347 Vol.
16%
60-61°F
$2,164 Vol.
51%
62-63°F
$1,089 Vol.
23%
64-65°F
$1,089 Vol.
7%
66-67°F
$810 Vol.
2%
68-69°F
$586 Vol.
<1%
70-71°F
$361 Vol.
<1%
72-73°F
$253 Vol.
<1%
74-75°F
$253 Vol.
<1%
76°F or higher
$405 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Sep '26.
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.Persistent rain and extensive cloud cover from a southerly flow of marine air are suppressing Seattle's high temperature on September 13, 2026, to forecast levels near 60°F according to National Weather Service guidance and multiple model runs. This setup contrasts with the 71°F climatological average high, as thick stratiform clouds limit solar heating while steady precipitation and moderate southerly winds enhance evaporative cooling and prevent boundary-layer warming. Recent model consensus shows minimal spread around this outcome, with only slight potential for brief afternoon breaks to reach 62–63°F if clearing occurs earlier than expected. Official observations through midday confirm the cool, saturated airmass remains in place, supporting the market's strong emphasis on the 60–61°F bin as the most probable resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Sep '26.
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.
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
Volume
$7,889End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Sep '26.
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.Persistent rain and extensive cloud cover from a southerly flow of marine air are suppressing Seattle's high temperature on September 13, 2026, to forecast levels near 60°F according to National Weather Service guidance and multiple model runs. This setup contrasts with the 71°F climatological average high, as thick stratiform clouds limit solar heating while steady precipitation and moderate southerly winds enhance evaporative cooling and prevent boundary-layer warming. Recent model consensus shows minimal spread around this outcome, with only slight potential for brief afternoon breaks to reach 62–63°F if clearing occurs earlier than expected. Official observations through midday confirm the cool, saturated airmass remains in place, supporting the market's strong emphasis on the 60–61°F bin as the most probable resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Seattle-Tacoma International Airport Station in degrees Fahrenheit on 13 Sep '26.
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.
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.
Volume
$7,889End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 7:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...Persistent rain and extensive cloud cover from a southerly flow of marine air are suppressing Seattle's high temperature on September 13, 2026, to forecast levels near 60°F according to National Weather Service guidance and multiple model runs. This setup contrasts with the 71°F climatological average high, as thick stratiform clouds limit solar heating while steady precipitation and moderate southerly winds enhance evaporative cooling and prevent boundary-layer warming. Recent model consensus shows minimal spread around this outcome, with only slight potential for brief afternoon breaks to reach 62–63°F if clearing occurs earlier than expected. Official observations through midday confirm the cool, saturated airmass remains in place, supporting the market's strong emphasis on the 60–61°F bin as the most probable 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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