Current forecast models from agencies including the Korea Meteorological Administration indicate a high of 27°C for Incheon on September 20 under clear skies, light northerly flow, and stable high pressure, producing the market's leading 39.5% implied probability. Differentiation among the tightly bunched 26–28°C outcomes hinges on small variations in boundary-layer mixing, maximum solar insolation under minimal cloud cover, and precise timing of any weak frontal passage. Ensemble spreads remain modest given the short lead time, yet afternoon model updates could shift resolution thresholds if dew points or wind speeds deviate. Historical late-September climatology for the region centers near 25–26°C, lending context to trader emphasis on slightly above-normal warmth.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seoul (Incheon) on September 20?
Highest temperature in Seoul (Incheon) on September 20?
27°C 40%
26°C 32%
28°C 15%
25°C 11%
NEW
NEW
Sep 20, 2026
21°C or below
<1%
22°C
<1%
23°C
1%
24°C
2%
25°C
11%
26°C
32%
27°C
40%
28°C
15%
29°C
4%
30°C
2%
31°C or higher
1%
27°C 40%
26°C 32%
28°C 15%
25°C 11%
NEW
NEW
Sep 20, 2026
21°C or below
$261 Vol.
<1%
22°C
$135 Vol.
<1%
23°C
$63 Vol.
1%
24°C
$0 Vol.
2%
25°C
$39 Vol.
11%
26°C
$64 Vol.
32%
27°C
$535 Vol.
40%
28°C
$99 Vol.
15%
29°C
$0 Vol.
4%
30°C
$232 Vol.
2%
31°C or higher
$343 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 20 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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.Current forecast models from agencies including the Korea Meteorological Administration indicate a high of 27°C for Incheon on September 20 under clear skies, light northerly flow, and stable high pressure, producing the market's leading 39.5% implied probability. Differentiation among the tightly bunched 26–28°C outcomes hinges on small variations in boundary-layer mixing, maximum solar insolation under minimal cloud cover, and precise timing of any weak frontal passage. Ensemble spreads remain modest given the short lead time, yet afternoon model updates could shift resolution thresholds if dew points or wind speeds deviate. Historical late-September climatology for the region centers near 25–26°C, lending context to trader emphasis on slightly above-normal warmth.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 20 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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 18, 2026, 12:56 AM ET
Volume
$1,771End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 20 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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.Current forecast models from agencies including the Korea Meteorological Administration indicate a high of 27°C for Incheon on September 20 under clear skies, light northerly flow, and stable high pressure, producing the market's leading 39.5% implied probability. Differentiation among the tightly bunched 26–28°C outcomes hinges on small variations in boundary-layer mixing, maximum solar insolation under minimal cloud cover, and precise timing of any weak frontal passage. Ensemble spreads remain modest given the short lead time, yet afternoon model updates could shift resolution thresholds if dew points or wind speeds deviate. Historical late-September climatology for the region centers near 25–26°C, lending context to trader emphasis on slightly above-normal warmth.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 20 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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=rksi
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 Metric Units" button until the relevant table displays °C.
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 Celsius (eg, 9°C). 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
$1,771End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Current forecast models from agencies including the Korea Meteorological Administration indicate a high of 27°C for Incheon on September 20 under clear skies, light northerly flow, and stable high pressure, producing the market's leading 39.5% implied probability. Differentiation among the tightly bunched 26–28°C outcomes hinges on small variations in boundary-layer mixing, maximum solar insolation under minimal cloud cover, and precise timing of any weak frontal passage. Ensemble spreads remain modest given the short lead time, yet afternoon model updates could shift resolution thresholds if dew points or wind speeds deviate. Historical late-September climatology for the region centers near 25–26°C, lending context to trader emphasis on slightly above-normal warmth.
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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