Trader consensus pins the highest temperature in London on March 26 at 10°C with 45.5% implied probability, driven by the Met Office's latest forecast indicating cloudy, showery conditions with daytime highs of 9-11°C under a weak Atlantic low-pressure influence. Ensemble models from ECMWF and UKMO show 70% of members clustering in the 9-11°C range, consistent with late-March climatology (historical mean 11.2°C at Heathrow) and recent cold snaps, including March 25 lows near 4°C. A stalling frontal boundary limits convective heating, while GFS updates slightly favor cooling, boosting 9°C odds to 20.5% and capping 12°C+ at under 5%, reflecting model convergence on subdued warmth.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 26?
Highest temperature in London on March 26?
10°C 47%
11°C 24%
9°C 21%
12°C 4.5%
$34,850 Vol.
$34,850 Vol.
3°C or below
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
1%
8°C
3%
9°C
21%
10°C
47%
11°C
24%
12°C
4%
13°C or higher
1%
10°C 47%
11°C 24%
9°C 21%
12°C 4.5%
$34,850 Vol.
$34,850 Vol.
3°C or below
<1%
4°C
<1%
5°C
<1%
6°C
<1%
7°C
1%
8°C
3%
9°C
21%
10°C
47%
11°C
24%
12°C
4%
13°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 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 pins the highest temperature in London on March 26 at 10°C with 45.5% implied probability, driven by the Met Office's latest forecast indicating cloudy, showery conditions with daytime highs of 9-11°C under a weak Atlantic low-pressure influence. Ensemble models from ECMWF and UKMO show 70% of members clustering in the 9-11°C range, consistent with late-March climatology (historical mean 11.2°C at Heathrow) and recent cold snaps, including March 25 lows near 4°C. A stalling frontal boundary limits convective heating, while GFS updates slightly favor cooling, boosting 9°C odds to 20.5% and capping 12°C+ at under 5%, reflecting model convergence on subdued warmth.
Experimental AI-generated summary referencing Polymarket data · Updated
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