Trader consensus on Polymarket favors 12°C (38.5% implied probability) as London's highest temperature on March 27, driven by the latest Met Office forecast ensemble showing a high-pressure ridge stabilizing over the UK, delivering settled conditions with light winds and ample sunshine. Recent ECMWF model runs, updated within the last 24 hours, project daytime highs clustering around 11–13°C in central London, aligning with climatological norms for late March (historical average 11.5°C) amid neutral ENSO influences. Supporting data from Heathrow observations yesterday indicate overnight lows near 6°C, priming mild daytime warming without advection of colder continental air. Uncertainties persist in boundary layer mixing and cloud cover; new 12Z model outputs expected midday could refine these market-implied odds further.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 27?
Highest temperature in London on March 27?
12°C 39%
13°C 27%
11°C 19%
14°C 7%
$52,281 Vol.
$52,281 Vol.
8°C or below
<1%
9°C
1%
10°C
4%
11°C
19%
12°C
39%
13°C
27%
14°C
7%
15°C
5%
16°C
1%
17°C
<1%
18°C or higher
<1%
12°C 39%
13°C 27%
11°C 19%
14°C 7%
$52,281 Vol.
$52,281 Vol.
8°C or below
<1%
9°C
1%
10°C
4%
11°C
19%
12°C
39%
13°C
27%
14°C
7%
15°C
5%
16°C
1%
17°C
<1%
18°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 23, 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 consensus on Polymarket favors 12°C (38.5% implied probability) as London's highest temperature on March 27, driven by the latest Met Office forecast ensemble showing a high-pressure ridge stabilizing over the UK, delivering settled conditions with light winds and ample sunshine. Recent ECMWF model runs, updated within the last 24 hours, project daytime highs clustering around 11–13°C in central London, aligning with climatological norms for late March (historical average 11.5°C) amid neutral ENSO influences. Supporting data from Heathrow observations yesterday indicate overnight lows near 6°C, priming mild daytime warming without advection of colder continental air. Uncertainties persist in boundary layer mixing and cloud cover; new 12Z model outputs expected midday could refine these market-implied odds further.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions