**Forecast consensus from multiple models points to a daily minimum temperature in the 18–20°C range for Incheon/Seoul on September 19, 2026, aligning with the market’s heaviest weighting on 20°C (44.5%) and 19°C (30.5%).** Current conditions feature a stable high-pressure regime with light northeasterly winds, partly cloudy to clear skies, and modest radiative cooling overnight. Official guidance (including Met Office and regional forecasts) indicates nighttime lows near 18–20°C (roughly 64–68°F), consistent with typical mid-September climatology for the region as solar angles decline and land surfaces lose heat efficiently under limited cloud cover. No strong cold fronts, typhoon remnants, or significant moisture advection are expected to alter this pattern in the next 24 hours. Ensemble spreads remain narrow, supporting trader focus on the 18–21°C outcomes while assigning low probability to outliers below 17°C or above 21°C. Updated model runs and official Korea Meteorological Administration briefings over the coming hours will provide the final calibration before 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 19?
Lowest temperature in Seoul (Incheon) on September 19?
20°C 45%
19°C 31%
21°C 18%
17°C 6%
NEW
NEW
Sep 19, 2026
14°C or below
1%
15°C
1%
16°C
1%
17°C
6%
18°C
5%
19°C
31%
20°C
45%
21°C
18%
22°C
2%
23°C
<1%
24°C or higher
1%
20°C 45%
19°C 31%
21°C 18%
17°C 6%
NEW
NEW
Sep 19, 2026
14°C or below
$51 Vol.
1%
15°C
$51 Vol.
1%
16°C
$205 Vol.
1%
17°C
$165 Vol.
6%
18°C
$222 Vol.
5%
19°C
$770 Vol.
31%
20°C
$1,159 Vol.
45%
21°C
$131 Vol.
18%
22°C
$0 Vol.
2%
23°C
$791 Vol.
<1%
24°C or higher
$51 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 19 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.**Forecast consensus from multiple models points to a daily minimum temperature in the 18–20°C range for Incheon/Seoul on September 19, 2026, aligning with the market’s heaviest weighting on 20°C (44.5%) and 19°C (30.5%).**
Current conditions feature a stable high-pressure regime with light northeasterly winds, partly cloudy to clear skies, and modest radiative cooling overnight. Official guidance (including Met Office and regional forecasts) indicates nighttime lows near 18–20°C (roughly 64–68°F), consistent with typical mid-September climatology for the region as solar angles decline and land surfaces lose heat efficiently under limited cloud cover.
No strong cold fronts, typhoon remnants, or significant moisture advection are expected to alter this pattern in the next 24 hours. Ensemble spreads remain narrow, supporting trader focus on the 18–21°C outcomes while assigning low probability to outliers below 17°C or above 21°C. Updated model runs and official Korea Meteorological Administration briefings over the coming hours will provide the final calibration before 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 19 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 17, 2026, 12:29 AM ET
Volume
$3,598End Date
Sep 19, 2026Market Opened
Sep 17, 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 19 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.**Forecast consensus from multiple models points to a daily minimum temperature in the 18–20°C range for Incheon/Seoul on September 19, 2026, aligning with the market’s heaviest weighting on 20°C (44.5%) and 19°C (30.5%).**
Current conditions feature a stable high-pressure regime with light northeasterly winds, partly cloudy to clear skies, and modest radiative cooling overnight. Official guidance (including Met Office and regional forecasts) indicates nighttime lows near 18–20°C (roughly 64–68°F), consistent with typical mid-September climatology for the region as solar angles decline and land surfaces lose heat efficiently under limited cloud cover.
No strong cold fronts, typhoon remnants, or significant moisture advection are expected to alter this pattern in the next 24 hours. Ensemble spreads remain narrow, supporting trader focus on the 18–21°C outcomes while assigning low probability to outliers below 17°C or above 21°C. Updated model runs and official Korea Meteorological Administration briefings over the coming hours will provide the final calibration before 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 19 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
$3,598End Date
Sep 19, 2026Market Opened
Sep 17, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...**Forecast consensus from multiple models points to a daily minimum temperature in the 18–20°C range for Incheon/Seoul on September 19, 2026, aligning with the market’s heaviest weighting on 20°C (44.5%) and 19°C (30.5%).** Current conditions feature a stable high-pressure regime with light northeasterly winds, partly cloudy to clear skies, and modest radiative cooling overnight. Official guidance (including Met Office and regional forecasts) indicates nighttime lows near 18–20°C (roughly 64–68°F), consistent with typical mid-September climatology for the region as solar angles decline and land surfaces lose heat efficiently under limited cloud cover. No strong cold fronts, typhoon remnants, or significant moisture advection are expected to alter this pattern in the next 24 hours. Ensemble spreads remain narrow, supporting trader focus on the 18–21°C outcomes while assigning low probability to outliers below 17°C or above 21°C. Updated model runs and official Korea Meteorological Administration briefings over the coming hours will provide the final calibration before 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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