Official Met Office observations confirm the highest temperature in London on May 13 reached exactly 13°C, anchoring trader consensus at a 100% market-implied probability for this outcome as aggregated sentiment backed by real capital. This positioning stems from precise, synchronized air temperature measurements—taken via standardized, calibrated thermometers at 1.25–2 meters above ground—at key sites including Heathrow Airport and St James's Park, adhering to World Meteorological Organization protocols. Amid below-average conditions for mid-May (historical highs around 16–18°C), no station exceeded this mark during the 24-hour period. Realistic challenges are minimal but could involve post hoc quality control revisions uncovering sensor discrepancies or debates over the defining London reference site, though such shifts are rare after initial daily summaries.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in London on May 13?
Highest temperature in London on May 13?
13°C 100.0%
15°C <1%
16°C <1%
17°C <1%
$245,103 Vol.
$245,103 Vol.
May 13, 2026
13°C
100%
15°C
<1%
16°C
<1%
17°C
<1%
18°C or higher
<1%
13°C 100.0%
15°C <1%
16°C <1%
17°C <1%
$245,103 Vol.
$245,103 Vol.
May 13, 2026
13°C
$41,921 Vol.
100%
15°C
$30,428 Vol.
<1%
16°C
$15,514 Vol.
<1%
17°C
$11,090 Vol.
<1%
18°C or higher
$13,247 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 13 May '26.
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.Official Met Office observations confirm the highest temperature in London on May 13 reached exactly 13°C, anchoring trader consensus at a 100% market-implied probability for this outcome as aggregated sentiment backed by real capital. This positioning stems from precise, synchronized air temperature measurements—taken via standardized, calibrated thermometers at 1.25–2 meters above ground—at key sites including Heathrow Airport and St James's Park, adhering to World Meteorological Organization protocols. Amid below-average conditions for mid-May (historical highs around 16–18°C), no station exceeded this mark during the 24-hour period. Realistic challenges are minimal but could involve post hoc quality control revisions uncovering sensor discrepancies or debates over the defining London reference site, though such shifts are rare after initial daily summaries.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 13 May '26.
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.
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: May 11, 2026, 12:09 AM ET
Volume
$245,103End Date
May 13, 2026Market Opened
May 11, 2026, 12:09 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 13 May '26.
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.Official Met Office observations confirm the highest temperature in London on May 13 reached exactly 13°C, anchoring trader consensus at a 100% market-implied probability for this outcome as aggregated sentiment backed by real capital. This positioning stems from precise, synchronized air temperature measurements—taken via standardized, calibrated thermometers at 1.25–2 meters above ground—at key sites including Heathrow Airport and St James's Park, adhering to World Meteorological Organization protocols. Amid below-average conditions for mid-May (historical highs around 16–18°C), no station exceeded this mark during the 24-hour period. Realistic challenges are minimal but could involve post hoc quality control revisions uncovering sensor discrepancies or debates over the defining London reference site, though such shifts are rare after initial daily summaries.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 13 May '26.
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.
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.
Volume
$245,103End Date
May 13, 2026Market Opened
May 11, 2026, 12:09 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
Official Met Office observations confirm the highest temperature in London on May 13 reached exactly 13°C, anchoring trader consensus at a 100% market-implied probability for this outcome as aggregated sentiment backed by real capital. This positioning stems from precise, synchronized air temperature measurements—taken via standardized, calibrated thermometers at 1.25–2 meters above ground—at key sites including Heathrow Airport and St James's Park, adhering to World Meteorological Organization protocols. Amid below-average conditions for mid-May (historical highs around 16–18°C), no station exceeded this mark during the 24-hour period. Realistic challenges are minimal but could involve post hoc quality control revisions uncovering sensor discrepancies or debates over the defining London reference site, though such shifts are rare after initial daily summaries.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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