**Trader consensus has converged on 20°C as the lowest temperature recorded in Busan on September 9, 2026, driven by consistent official forecasts and real-time observations from the Korea Meteorological Administration.** Multiple models and station data show overnight lows stabilizing near 20°C (68°F) under partly cloudy skies with northeast winds of 10–15 mph, following daytime highs around 23–26°C. This aligns with typical early-September climatology for the region, where marine influence and seasonal transition moderate extremes. The 100% market-implied probability reflects high confidence in KMA’s final measurement, though minor deviations could arise from station-specific siting, rounding conventions, or unforecasted radiative cooling if skies clear further overnight. Updated model runs and official daily summaries remain the key near-term catalysts.
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 9?
20°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$1,872 Vol.
$1,872 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
20°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$1,872 Vol.
$1,872 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
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 7, 2026, 12:30 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rkpkResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
**Trader consensus has converged on 20°C as the lowest temperature recorded in Busan on September 9, 2026, driven by consistent official forecasts and real-time observations from the Korea Meteorological Administration.** Multiple models and station data show overnight lows stabilizing near 20°C (68°F) under partly cloudy skies with northeast winds of 10–15 mph, following daytime highs around 23–26°C. This aligns with typical early-September climatology for the region, where marine influence and seasonal transition moderate extremes. The 100% market-implied probability reflects high confidence in KMA’s final measurement, though minor deviations could arise from station-specific siting, rounding conventions, or unforecasted radiative cooling if skies clear further overnight. Updated model runs and official daily summaries remain the key near-term catalysts.
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