Trader sentiment on London's highest temperature March 23 is tightly split between 13°C (33.5%) and 14°C (32.5%), driven by ensemble forecast means from ECMWF and UK Met Office hovering near 13.5°C amid a mild westerly airflow. Recent model runs show peaks of 12-15°C, with subtle differences in cloud cover timing and boundary layer mixing accounting for the 1°C spread—clearer skies could nudge toward 14°C, while overcast conditions favor 13°C. Historical late-March highs average 11-12°C at Heathrow, but current jet stream positioning supports above-normal warmth. Traders eye tomorrow's 00Z updates for resolution-defining clarity, as small-scale convective tweaks remain uncertain.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 23?
Highest temperature in London on March 23?
14°C 33%
13°C 29%
15°C 18%
12°C 12%
9°C or below
1%
10°C
1%
11°C
2%
12°C
12%
13°C
29%
14°C
41%
15°C
18%
16°C
9%
17°C
1%
18°C
2%
19°C or higher
1%
14°C 33%
13°C 29%
15°C 18%
12°C 12%
9°C or below
1%
10°C
1%
11°C
2%
12°C
12%
13°C
29%
14°C
41%
15°C
18%
16°C
9%
17°C
1%
18°C
2%
19°C or higher
1%
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 London City Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
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 19, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Trader sentiment on London's highest temperature March 23 is tightly split between 13°C (33.5%) and 14°C (32.5%), driven by ensemble forecast means from ECMWF and UK Met Office hovering near 13.5°C amid a mild westerly airflow. Recent model runs show peaks of 12-15°C, with subtle differences in cloud cover timing and boundary layer mixing accounting for the 1°C spread—clearer skies could nudge toward 14°C, while overcast conditions favor 13°C. Historical late-March highs average 11-12°C at Heathrow, but current jet stream positioning supports above-normal warmth. Traders eye tomorrow's 00Z updates for resolution-defining clarity, as small-scale convective tweaks remain uncertain.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions