Trader consensus has locked in 8°C as the highest temperature in Seoul on March 18, driven by unified forecasts from the Korea Meteorological Administration (KMA) and global models like ECMWF and GFS, which project a daytime maximum of precisely 8°C under persistent northerly winds advecting cold Siberian air. Current observations confirm a stable cool air mass over the Korean Peninsula, with nighttime lows around 2-3°C supporting limited diurnal warming. This aligns with verified ensemble model outputs showing over 90% agreement on this outcome. Realistic challenges include an unforeseen warm front or jet stream ridge amplifying southerly flow, though model convergence and historical March variability (average highs ~11°C) make upsets improbable absent major synoptic shifts.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seoul on March 18?
Highest temperature in Seoul on March 18?
8°C 100.0%
3°C or below <1%
4°C <1%
5°C <1%
$326,257 Vol.
$326,257 Vol.
3°C or below
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C
Yes
9°C
No
10°C
No
11°C
No
12°C
No
13°C or higher
No
8°C 100.0%
3°C or below <1%
4°C <1%
5°C <1%
$326,257 Vol.
$326,257 Vol.
3°C or below
No
4°C
No
5°C
No
6°C
No
7°C
No
8°C
Yes
9°C
No
10°C
No
11°C
No
12°C
No
13°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 14, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Trader consensus has locked in 8°C as the highest temperature in Seoul on March 18, driven by unified forecasts from the Korea Meteorological Administration (KMA) and global models like ECMWF and GFS, which project a daytime maximum of precisely 8°C under persistent northerly winds advecting cold Siberian air. Current observations confirm a stable cool air mass over the Korean Peninsula, with nighttime lows around 2-3°C supporting limited diurnal warming. This aligns with verified ensemble model outputs showing over 90% agreement on this outcome. Realistic challenges include an unforeseen warm front or jet stream ridge amplifying southerly flow, though model convergence and historical March variability (average highs ~11°C) make upsets improbable absent major synoptic shifts.
Experimental AI-generated summary referencing Polymarket data · Updated
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