Current forecasts from multiple models indicate overnight lows in Seoul and Incheon near 19–20°C on September 18, driven by a stable high-pressure system promoting clear to partly cloudy skies and moderate easterly winds that limit cloud cover and enhance radiative cooling after daytime highs around 27–28°C. Historical September climatology supports typical minimums in this range, with no active fronts, typhoons, or significant moisture intrusions expected to alter the pattern. Trader consensus clusters tightly around these values because small variations in cloud cover or wind speed could shift the exact minimum by 1°C, while lower-probability outcomes reflect model spread or rare cooling scenarios. Updated runs from agencies like the Korea Meteorological Administration will refine this ahead of 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?
19°C 44%
20°C 42%
21°C 19%
18°C 11%
NEW
NEW
Sep 18, 2026
15°C or below
3%
16°C
3%
17°C
7%
18°C
11%
19°C
27%
20°C
33%
21°C
19%
22°C
5%
23°C
3%
24°C
1%
25°C or higher
1%
19°C 44%
20°C 42%
21°C 19%
18°C 11%
NEW
NEW
Sep 18, 2026
15°C or below
$69 Vol.
3%
16°C
$0 Vol.
3%
17°C
$33 Vol.
7%
18°C
$33 Vol.
11%
19°C
$225 Vol.
27%
20°C
$264 Vol.
33%
21°C
$56 Vol.
19%
22°C
$0 Vol.
5%
23°C
$0 Vol.
3%
24°C
$33 Vol.
1%
25°C or higher
$33 Vol.
1%
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.Current forecasts from multiple models indicate overnight lows in Seoul and Incheon near 19–20°C on September 18, driven by a stable high-pressure system promoting clear to partly cloudy skies and moderate easterly winds that limit cloud cover and enhance radiative cooling after daytime highs around 27–28°C. Historical September climatology supports typical minimums in this range, with no active fronts, typhoons, or significant moisture intrusions expected to alter the pattern. Trader consensus clusters tightly around these values because small variations in cloud cover or wind speed could shift the exact minimum by 1°C, while lower-probability outcomes reflect model spread or rare cooling scenarios. Updated runs from agencies like the Korea Meteorological Administration will refine this ahead of 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
$744End 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.Current forecasts from multiple models indicate overnight lows in Seoul and Incheon near 19–20°C on September 18, driven by a stable high-pressure system promoting clear to partly cloudy skies and moderate easterly winds that limit cloud cover and enhance radiative cooling after daytime highs around 27–28°C. Historical September climatology supports typical minimums in this range, with no active fronts, typhoons, or significant moisture intrusions expected to alter the pattern. Trader consensus clusters tightly around these values because small variations in cloud cover or wind speed could shift the exact minimum by 1°C, while lower-probability outcomes reflect model spread or rare cooling scenarios. Updated runs from agencies like the Korea Meteorological Administration will refine this ahead of 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
$744End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Current forecasts from multiple models indicate overnight lows in Seoul and Incheon near 19–20°C on September 18, driven by a stable high-pressure system promoting clear to partly cloudy skies and moderate easterly winds that limit cloud cover and enhance radiative cooling after daytime highs around 27–28°C. Historical September climatology supports typical minimums in this range, with no active fronts, typhoons, or significant moisture intrusions expected to alter the pattern. Trader consensus clusters tightly around these values because small variations in cloud cover or wind speed could shift the exact minimum by 1°C, while lower-probability outcomes reflect model spread or rare cooling scenarios. Updated runs from agencies like the Korea Meteorological Administration will refine this ahead of 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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