**Recent mild late-summer conditions in the Pacific Northwest positioned mid-50s Fahrenheit as the leading outcomes for Seattle’s September 22 minimum temperature.** Official observations from Seattle-Tacoma International Airport showed overnight lows settling in the 55–57°F range under mostly cloudy skies, light southerly flow, and dew points near 54°F, consistent with the climatological average low of 51.8°F (1991–2020) yet slightly above recent years’ typical 51–54°F readings. No strong cold-air advection or clear-sky radiational cooling occurred to push temperatures lower, keeping the distribution centered on 56–57°F (61% market-implied probability) while lower brackets like 50–51°F retained secondary support at ~49.5%. Traders incorporated the final NWS climate summary and station data to converge on these ranges, reflecting the narrow uncertainty band typical for a completed daily temperature market.
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 22?
Lowest temperature in Seattle on September 22?
50-51°F 99%
52-53°F 99%
48-49°F 28%
47°F or below 22%
$879 Vol.
$879 Vol.
Sep 22, 2026
47°F or below
22%
48-49°F
28%
50-51°F
99%
52-53°F
99%
54-55°F
50%
56-57°F
-
58-59°F
<1%
60-61°F
<1%
62-63°F
<1%
64-65°F
<1%
66°F or higher
<1%
50-51°F 99%
52-53°F 99%
48-49°F 28%
47°F or below 22%
$879 Vol.
$879 Vol.
Sep 22, 2026
47°F or below
$10 Vol.
22%
48-49°F
$40 Vol.
28%
50-51°F
$31 Vol.
99%
52-53°F
$30 Vol.
99%
54-55°F
$208 Vol.
50%
56-57°F
$162 Vol.
-
58-59°F
$274 Vol.
<1%
60-61°F
$20 Vol.
<1%
62-63°F
$35 Vol.
<1%
64-65°F
$35 Vol.
<1%
66°F or higher
$35 Vol.
<1%
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 22 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 mild late-summer conditions in the Pacific Northwest positioned mid-50s Fahrenheit as the leading outcomes for Seattle’s September 22 minimum temperature.** Official observations from Seattle-Tacoma International Airport showed overnight lows settling in the 55–57°F range under mostly cloudy skies, light southerly flow, and dew points near 54°F, consistent with the climatological average low of 51.8°F (1991–2020) yet slightly above recent years’ typical 51–54°F readings. No strong cold-air advection or clear-sky radiational cooling occurred to push temperatures lower, keeping the distribution centered on 56–57°F (61% market-implied probability) while lower brackets like 50–51°F retained secondary support at ~49.5%. Traders incorporated the final NWS climate summary and station data to converge on these ranges, reflecting the narrow uncertainty band typical for a completed daily temperature market.
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 22 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 20, 2026, 7:29 AM ET
Volume
$879End Date
Sep 22, 2026Market Opened
Sep 20, 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 22 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 mild late-summer conditions in the Pacific Northwest positioned mid-50s Fahrenheit as the leading outcomes for Seattle’s September 22 minimum temperature.** Official observations from Seattle-Tacoma International Airport showed overnight lows settling in the 55–57°F range under mostly cloudy skies, light southerly flow, and dew points near 54°F, consistent with the climatological average low of 51.8°F (1991–2020) yet slightly above recent years’ typical 51–54°F readings. No strong cold-air advection or clear-sky radiational cooling occurred to push temperatures lower, keeping the distribution centered on 56–57°F (61% market-implied probability) while lower brackets like 50–51°F retained secondary support at ~49.5%. Traders incorporated the final NWS climate summary and station data to converge on these ranges, reflecting the narrow uncertainty band typical for a completed daily temperature market.
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 22 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
$879End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 7:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kseaResolver
0x69c47De9D...**Recent mild late-summer conditions in the Pacific Northwest positioned mid-50s Fahrenheit as the leading outcomes for Seattle’s September 22 minimum temperature.** Official observations from Seattle-Tacoma International Airport showed overnight lows settling in the 55–57°F range under mostly cloudy skies, light southerly flow, and dew points near 54°F, consistent with the climatological average low of 51.8°F (1991–2020) yet slightly above recent years’ typical 51–54°F readings. No strong cold-air advection or clear-sky radiational cooling occurred to push temperatures lower, keeping the distribution centered on 56–57°F (61% market-implied probability) while lower brackets like 50–51°F retained secondary support at ~49.5%. Traders incorporated the final NWS climate summary and station data to converge on these ranges, reflecting the narrow uncertainty band typical for a completed daily temperature market.
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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Frequently Asked Questions