Current forecasts from regional models show Busan under clear to mostly clear skies with moderate northeasterly flow on September 22, supporting overnight radiational cooling over land while the adjacent sea moderates minimum temperatures. This setup favors a daily low near 19–20 °C, yet subtle variations in wind speed, cloud timing, and boundary-layer mixing can shift the actual minimum by 1–2 °C. Trader consensus clustering around 17–18 °C reflects awareness of these local coastal effects and historical September variability, where clear, calm nights occasionally produce readings 1–2 °C below guidance. Higher outcomes remain improbable without unexpected warming or increased cloud cover, while sub-15 °C readings would require stronger cooling than current conditions support. Updated model runs and official observations through the night will refine the precise threshold.
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?
17°C 93%
15°C 92%
16°C 92%
14°C or below 87%
14°C or below
87%
15°C
92%
16°C
92%
17°C
93%
18°C
-
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C or higher
<1%
17°C 93%
15°C 92%
16°C 92%
14°C or below 87%
14°C or below
87%
15°C
92%
16°C
92%
17°C
93%
18°C
-
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°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=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 forecasts from regional models show Busan under clear to mostly clear skies with moderate northeasterly flow on September 22, supporting overnight radiational cooling over land while the adjacent sea moderates minimum temperatures. This setup favors a daily low near 19–20 °C, yet subtle variations in wind speed, cloud timing, and boundary-layer mixing can shift the actual minimum by 1–2 °C. Trader consensus clustering around 17–18 °C reflects awareness of these local coastal effects and historical September variability, where clear, calm nights occasionally produce readings 1–2 °C below guidance. Higher outcomes remain improbable without unexpected warming or increased cloud cover, while sub-15 °C readings would require stronger cooling than current conditions support. Updated model runs and official observations through the night will refine the precise threshold.
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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