Trader consensus heavily favors a high of 9°C in London on March 25 (80% implied probability), driven by the latest Met Office ensemble forecasts projecting cloudy conditions, light northerly winds, and daytime maxima peaking at 8-10°C amid a cooler-than-average late March pattern. Historical data shows London's March highs average 11°C, but recent observations—nighttime lows dipping to 3-5°C and persistent low-pressure systems over the UK—have shifted models downward, reducing odds for warmer outcomes. Short-range GFS and UKV models converge on 9°C as most likely, though minor divergences leave 19% on 10°C; resolution hinges on official Heathrow readings, with no heatwave signals in Atlantic blocking patterns.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 25?
Highest temperature in London on March 25?
9°C 80%
10°C 19%
11°C 1.0%
12°C <1%
$163,541 Vol.
$163,541 Vol.
9°C
80%
10°C
19%
11°C
1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C or higher
<1%
9°C 80%
10°C 19%
11°C 1.0%
12°C <1%
$163,541 Vol.
$163,541 Vol.
9°C
80%
10°C
19%
11°C
1%
12°C
<1%
13°C
<1%
14°C
<1%
15°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 21, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Trader consensus heavily favors a high of 9°C in London on March 25 (80% implied probability), driven by the latest Met Office ensemble forecasts projecting cloudy conditions, light northerly winds, and daytime maxima peaking at 8-10°C amid a cooler-than-average late March pattern. Historical data shows London's March highs average 11°C, but recent observations—nighttime lows dipping to 3-5°C and persistent low-pressure systems over the UK—have shifted models downward, reducing odds for warmer outcomes. Short-range GFS and UKV models converge on 9°C as most likely, though minor divergences leave 19% on 10°C; resolution hinges on official Heathrow readings, with no heatwave signals in Atlantic blocking patterns.
Experimental AI-generated summary referencing Polymarket data · Updated
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