Traders' overwhelming consensus on 11°C as Seoul's highest temperature on March 21 stems from tight alignment in ensemble forecasts from the Korea Meteorological Administration and global models like ECMWF and GFS, all converging on daytime peaks of 10-11°C amid cool northerly flows and partly cloudy conditions. This positioning aligns with Seoul's March climatology, where 30-year averages show highs around 11°C, reinforced by recent upper-air analyses indicating stable high-pressure dominance suppressing warmth. Realistic challenges include an unforeseen southerly wind shift or jet stream dip, potentially lifting temps to 13°C+, but model spreads under 1°C and absent teleconnection signals make such deviations low-probability outliers.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seoul on March 21?
Highest temperature in Seoul on March 21?
11°C 100.0%
4°C or below <1%
5°C <1%
6°C <1%
$374,292 Vol.
$374,292 Vol.
4°C or below
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
Yes
12°C
No
13°C
No
14°C or higher
No
11°C 100.0%
4°C or below <1%
5°C <1%
6°C <1%
$374,292 Vol.
$374,292 Vol.
4°C or below
No
5°C
No
6°C
No
7°C
No
8°C
No
9°C
No
10°C
No
11°C
Yes
12°C
No
13°C
No
14°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 17, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Traders' overwhelming consensus on 11°C as Seoul's highest temperature on March 21 stems from tight alignment in ensemble forecasts from the Korea Meteorological Administration and global models like ECMWF and GFS, all converging on daytime peaks of 10-11°C amid cool northerly flows and partly cloudy conditions. This positioning aligns with Seoul's March climatology, where 30-year averages show highs around 11°C, reinforced by recent upper-air analyses indicating stable high-pressure dominance suppressing warmth. Realistic challenges include an unforeseen southerly wind shift or jet stream dip, potentially lifting temps to 13°C+, but model spreads under 1°C and absent teleconnection signals make such deviations low-probability outliers.
Experimental AI-generated summary referencing Polymarket data · Updated
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