Trader consensus assigns a 100% implied probability to 11°C as London's highest temperature on March 29, backed by confirmed Met Office observations at Heathrow—the official recording station—which registered that maximum amid persistent cloud cover, light rain, and moderate northerly airflow suppressing solar insolation and boundary-layer mixing for minimal daytime warming. Early-morning hourly updates from numerical weather prediction models precisely forecasted this outcome following high-pressure decay after early-March warmth exceeding 19°C, aligning with late-March climatology averaging 11–12°C. Post-observation, challenges are negligible barring rare data revisions from quality checks at secondary sites like St James's Park, though current synoptic patterns render higher readings improbable. Provisional daily extremes finalize soon via Met Office summaries.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 29?
Highest temperature in London on March 29?
11°C 100.0%
12°C <1%
13°C <1%
14°C <1%
$497,733 Vol.
$497,733 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C or higher
<1%
11°C 100.0%
12°C <1%
13°C <1%
14°C <1%
$497,733 Vol.
$497,733 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°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 25, 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
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.
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus assigns a 100% implied probability to 11°C as London's highest temperature on March 29, backed by confirmed Met Office observations at Heathrow—the official recording station—which registered that maximum amid persistent cloud cover, light rain, and moderate northerly airflow suppressing solar insolation and boundary-layer mixing for minimal daytime warming. Early-morning hourly updates from numerical weather prediction models precisely forecasted this outcome following high-pressure decay after early-March warmth exceeding 19°C, aligning with late-March climatology averaging 11–12°C. Post-observation, challenges are negligible barring rare data revisions from quality checks at secondary sites like St James's Park, though current synoptic patterns render higher readings improbable. Provisional daily extremes finalize soon via Met Office summaries.
Experimental AI-generated summary referencing Polymarket data · Updated
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