Current forecast models, including GFS runs, project a stable high-pressure regime over Busan on September 16 with northeast winds of 10–17 mph, partly cloudy skies, and no significant frontal passages or moisture influx. This setup supports overnight radiative cooling leading to a minimum near 20–22°C, aligning with climatological September lows of about 21°C. Trader balance between the 25°C-or-higher and 15°C-or-below outcomes stems from model spread in exact minimum timing and boundary-layer mixing, with recent observations showing consistent 21–22°C readings and limited diurnal variability. Updated model guidance expected within 24 hours will likely narrow resolution criteria around these thresholds.
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 16?
25°C or higher 72%
15°C or below 71%
19°C 40%
16°C 39%
15°C or below
71%
16°C
39%
17°C
39%
18°C
22%
19°C
40%
20°C
32%
21°C
24%
22°C
39%
23°C
39%
24°C
39%
25°C or higher
72%
25°C or higher 72%
15°C or below 71%
19°C 40%
16°C 39%
15°C or below
71%
16°C
39%
17°C
39%
18°C
22%
19°C
40%
20°C
32%
21°C
24%
22°C
39%
23°C
39%
24°C
39%
25°C or higher
72%
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 14, 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, including GFS runs, project a stable high-pressure regime over Busan on September 16 with northeast winds of 10–17 mph, partly cloudy skies, and no significant frontal passages or moisture influx. This setup supports overnight radiative cooling leading to a minimum near 20–22°C, aligning with climatological September lows of about 21°C. Trader balance between the 25°C-or-higher and 15°C-or-below outcomes stems from model spread in exact minimum timing and boundary-layer mixing, with recent observations showing consistent 21–22°C readings and limited diurnal variability. Updated model guidance expected within 24 hours will likely narrow resolution criteria around these thresholds.
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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