Current forecast models from the Korea Meteorological Administration and global ensembles indicate clear skies and northeasterly flow over Busan on September 22, supporting overnight radiative cooling with minimum temperatures likely near 19–20°C. This aligns with seasonal September baselines and the influence of the North Pacific High, which has limited frontal activity and moisture. Trader sentiment remains closely balanced between the 14°C-or-below (50.0% implied) and 24°C-or-higher (49.0%) outcomes due to inherent uncertainty in boundary-layer mixing and potential small shifts in wind or cloud cover. Key upcoming catalysts include updated KMA and ECMWF runs plus real-time station observations that will determine the official daily minimum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Busan on September 22?
14°C or below 100%
24°C or higher 98%
18°C 40%
19°C 40%
14°C or below
100%
15°C
39%
16°C
39%
17°C
39%
18°C
40%
19°C
40%
20°C
39%
21°C
39%
22°C
39%
23°C
39%
24°C or higher
98%
14°C or below 100%
24°C or higher 98%
18°C 40%
19°C 40%
14°C or below
100%
15°C
39%
16°C
39%
17°C
39%
18°C
40%
19°C
40%
20°C
39%
21°C
39%
22°C
39%
23°C
39%
24°C or higher
98%
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=rkpk
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 20, 2026, 12:31 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rkpkResolver
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=rkpk
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=rkpkResolver
0x69c47De9D...Current forecast models from the Korea Meteorological Administration and global ensembles indicate clear skies and northeasterly flow over Busan on September 22, supporting overnight radiative cooling with minimum temperatures likely near 19–20°C. This aligns with seasonal September baselines and the influence of the North Pacific High, which has limited frontal activity and moisture. Trader sentiment remains closely balanced between the 14°C-or-below (50.0% implied) and 24°C-or-higher (49.0%) outcomes due to inherent uncertainty in boundary-layer mixing and potential small shifts in wind or cloud cover. Key upcoming catalysts include updated KMA and ECMWF runs plus real-time station observations that will determine the official daily minimum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions