Recent forecasts from the Korea Meteorological Administration and global models indicate overnight lows of 19–20°C in the Seoul-Incheon area on September 18 under stable high pressure, easterly winds, and partly cloudy to clear skies that favor radiative cooling. This consensus supports the market’s concentration on 19°C and 20°C outcomes, with 21°C remaining plausible if cloud cover or wind speeds limit overnight temperature drops. Historical September climatology shows typical minimums near 18°C, but current conditions lack significant frontal systems or moisture that could alter the diurnal range. Updated model runs and official KMA briefings through the evening of September 17 will provide the final inputs ahead of market resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Seoul (Incheon) on September 18?
Lowest temperature in Seoul (Incheon) on September 18?
20°C 44%
19°C 32%
21°C 19%
18°C 9%
NEW
NEW
Sep 18, 2026
15°C or below
1%
16°C
2%
17°C
6%
18°C
9%
19°C
32%
20°C
44%
21°C
19%
22°C
2%
23°C
2%
24°C
1%
25°C or higher
2%
20°C 44%
19°C 32%
21°C 19%
18°C 9%
NEW
NEW
Sep 18, 2026
15°C or below
$101 Vol.
1%
16°C
$251 Vol.
2%
17°C
$106 Vol.
6%
18°C
$73 Vol.
9%
19°C
$815 Vol.
32%
20°C
$957 Vol.
44%
21°C
$397 Vol.
19%
22°C
$0 Vol.
2%
23°C
$0 Vol.
2%
24°C
$65 Vol.
1%
25°C or higher
$53 Vol.
2%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=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.Recent forecasts from the Korea Meteorological Administration and global models indicate overnight lows of 19–20°C in the Seoul-Incheon area on September 18 under stable high pressure, easterly winds, and partly cloudy to clear skies that favor radiative cooling. This consensus supports the market’s concentration on 19°C and 20°C outcomes, with 21°C remaining plausible if cloud cover or wind speeds limit overnight temperature drops. Historical September climatology shows typical minimums near 18°C, but current conditions lack significant frontal systems or moisture that could alter the diurnal range. Updated model runs and official KMA briefings through the evening of September 17 will provide the final inputs ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=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 lowest 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 16, 2026, 12:29 AM ET
Volume
$2,819End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=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.Recent forecasts from the Korea Meteorological Administration and global models indicate overnight lows of 19–20°C in the Seoul-Incheon area on September 18 under stable high pressure, easterly winds, and partly cloudy to clear skies that favor radiative cooling. This consensus supports the market’s concentration on 19°C and 20°C outcomes, with 21°C remaining plausible if cloud cover or wind speeds limit overnight temperature drops. Historical September climatology shows typical minimums near 18°C, but current conditions lack significant frontal systems or moisture that could alter the diurnal range. Updated model runs and official KMA briefings through the evening of September 17 will provide the final inputs ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=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 lowest 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
$2,819End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Recent forecasts from the Korea Meteorological Administration and global models indicate overnight lows of 19–20°C in the Seoul-Incheon area on September 18 under stable high pressure, easterly winds, and partly cloudy to clear skies that favor radiative cooling. This consensus supports the market’s concentration on 19°C and 20°C outcomes, with 21°C remaining plausible if cloud cover or wind speeds limit overnight temperature drops. Historical September climatology shows typical minimums near 18°C, but current conditions lack significant frontal systems or moisture that could alter the diurnal range. Updated model runs and official KMA briefings through the evening of September 17 will provide the final inputs ahead of market 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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