Trader consensus favors 10°C (31%) and 11°C (29.5%) for London's highest temperature on March 26, reflecting tight uncertainty in ensemble forecasts from the Met Office and ECMWF, which project peaks of 9-11°C under a mild Atlantic westerly flow. Differentiating the leaders, UKMO models edge toward 11°C with breaks in cloud cover allowing insolation, while GFS ensembles cluster at 9-10°C due to persistent stratocumulus from an incoming front and cooler northerly shear. Historical March 26 maxima average 11.2°C at Heathrow, but recent cool soil temperatures and jet stream waviness cap upside risk; monitor evening model updates for resolution shifts.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 26?
Highest temperature in London on March 26?
10°C 32%
11°C 31%
9°C 22%
12°C 11.7%
$56,313 Vol.
$56,313 Vol.
3°C or below
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
2%
8°C
4%
9°C
22%
10°C
32%
11°C
31%
12°C
12%
13°C or higher
4%
10°C 32%
11°C 31%
9°C 22%
12°C 11.7%
$56,313 Vol.
$56,313 Vol.
3°C or below
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
2%
8°C
4%
9°C
22%
10°C
32%
11°C
31%
12°C
12%
13°C or higher
4%
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 22, 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 favors 10°C (31%) and 11°C (29.5%) for London's highest temperature on March 26, reflecting tight uncertainty in ensemble forecasts from the Met Office and ECMWF, which project peaks of 9-11°C under a mild Atlantic westerly flow. Differentiating the leaders, UKMO models edge toward 11°C with breaks in cloud cover allowing insolation, while GFS ensembles cluster at 9-10°C due to persistent stratocumulus from an incoming front and cooler northerly shear. Historical March 26 maxima average 11.2°C at Heathrow, but recent cool soil temperatures and jet stream waviness cap upside risk; monitor evening model updates for resolution shifts.
Experimental AI-generated summary referencing Polymarket data · Updated
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