**Forecast consensus from the Korea Meteorological Administration (KMA) and global models centers on a minimum temperature of 19–20°C in Seoul/Incheon on September 23.** KMA explicitly projects an Incheon low of 20°C and Seoul low of 19°C under mostly clear skies, with light winds and no significant cold advection. Multiple sources, including WeatherBug, PredictWind, and Met Office guidance, align on overnight lows near 18–20°C (65–68°F), driven by radiative cooling beneath partly cloudy conditions and a mild air mass with dew points supporting limited further drop. These conditions match historical late-September patterns but sit slightly above average, explaining the market’s heavy weighting toward 19°C (37.5%) and 20°C (48.0%). With resolution imminent, traders are pricing in the stability of current model runs rather than outlier scenarios.
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 23?
20°C 48%
19°C 36%
18°C 7%
17°C 2%
15°C or below
1%
16°C
1%
17°C
2%
18°C
7%
19°C
36%
20°C
48%
21°C
2%
22°C
1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
20°C 48%
19°C 36%
18°C 7%
17°C 2%
15°C or below
1%
16°C
1%
17°C
2%
18°C
7%
19°C
36%
20°C
48%
21°C
2%
22°C
1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
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 21, 2026, 12:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...**Forecast consensus from the Korea Meteorological Administration (KMA) and global models centers on a minimum temperature of 19–20°C in Seoul/Incheon on September 23.** KMA explicitly projects an Incheon low of 20°C and Seoul low of 19°C under mostly clear skies, with light winds and no significant cold advection. Multiple sources, including WeatherBug, PredictWind, and Met Office guidance, align on overnight lows near 18–20°C (65–68°F), driven by radiative cooling beneath partly cloudy conditions and a mild air mass with dew points supporting limited further drop. These conditions match historical late-September patterns but sit slightly above average, explaining the market’s heavy weighting toward 19°C (37.5%) and 20°C (48.0%). With resolution imminent, traders are pricing in the stability of current model runs rather than outlier scenarios.
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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