Trader consensus on Polymarket assigns 100% implied probability to a highest temperature of 20°C in London on May 9, 2026, backed by official Met Office observations at the market's resolution station, London City Airport (EGLC), where automated weather reports recorded a peak of exactly 20°C. This aligns with mild spring conditions under a persistent high-pressure ridge fostering light easterly winds and partial cloud cover that capped solar heating, consistent with UKMO and ECMWF forecast consensus of 19–21°C ranges against the site's May climatological average of 17–18°C. UK-wide maxima reached 22.9°C farther south at Wiggonholt, but urban and coastal factors limited London. Realistic challenges are minimal post-finalization, though rare post-hoc data revisions from instrument recalibrations could theoretically alter resolution; traders await Wunderground's verified dataset for closure.
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 9?
Highest temperature in London on May 9?
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$174,241 Vol.
$174,241 Vol.
May 9, 2026
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$174,241 Vol.
$174,241 Vol.
May 9, 2026
15°C or below
$17,864 Vol.
No
16°C
$8,249 Vol.
No
17°C
$11,894 Vol.
No
18°C
$20,688 Vol.
No
19°C
$22,747 Vol.
No
20°C
$26,391 Vol.
Yes
21°C
$27,222 Vol.
No
22°C
$18,743 Vol.
No
23°C
$11,419 Vol.
No
24°C
$4,698 Vol.
No
25°C or higher
$4,326 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 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.Trader consensus on Polymarket assigns 100% implied probability to a highest temperature of 20°C in London on May 9, 2026, backed by official Met Office observations at the market's resolution station, London City Airport (EGLC), where automated weather reports recorded a peak of exactly 20°C. This aligns with mild spring conditions under a persistent high-pressure ridge fostering light easterly winds and partial cloud cover that capped solar heating, consistent with UKMO and ECMWF forecast consensus of 19–21°C ranges against the site's May climatological average of 17–18°C. UK-wide maxima reached 22.9°C farther south at Wiggonholt, but urban and coastal factors limited London. Realistic challenges are minimal post-finalization, though rare post-hoc data revisions from instrument recalibrations could theoretically alter resolution; traders await Wunderground's verified dataset for closure.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 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 7, 2026, 12:11 AM ET
Volume
$174,241End Date
May 9, 2026Market Opened
May 7, 2026, 12:11 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 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.Trader consensus on Polymarket assigns 100% implied probability to a highest temperature of 20°C in London on May 9, 2026, backed by official Met Office observations at the market's resolution station, London City Airport (EGLC), where automated weather reports recorded a peak of exactly 20°C. This aligns with mild spring conditions under a persistent high-pressure ridge fostering light easterly winds and partial cloud cover that capped solar heating, consistent with UKMO and ECMWF forecast consensus of 19–21°C ranges against the site's May climatological average of 17–18°C. UK-wide maxima reached 22.9°C farther south at Wiggonholt, but urban and coastal factors limited London. Realistic challenges are minimal post-finalization, though rare post-hoc data revisions from instrument recalibrations could theoretically alter resolution; traders await Wunderground's verified dataset for closure.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 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
$174,241End Date
May 9, 2026Market Opened
May 7, 2026, 12:11 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket assigns 100% implied probability to a highest temperature of 20°C in London on May 9, 2026, backed by official Met Office observations at the market's resolution station, London City Airport (EGLC), where automated weather reports recorded a peak of exactly 20°C. This aligns with mild spring conditions under a persistent high-pressure ridge fostering light easterly winds and partial cloud cover that capped solar heating, consistent with UKMO and ECMWF forecast consensus of 19–21°C ranges against the site's May climatological average of 17–18°C. UK-wide maxima reached 22.9°C farther south at Wiggonholt, but urban and coastal factors limited London. Realistic challenges are minimal post-finalization, though rare post-hoc data revisions from instrument recalibrations could theoretically alter resolution; traders await Wunderground's verified dataset for closure.
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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