Recent Met Office guidance, centered on ensemble forecasts from the UK and ECMWF models, has anchored trader sentiment around a 21–23°C maximum for London on August 22, with light winds and sunny intervals supporting the tight cluster of implied probabilities. These outcomes reflect subtle uncertainties in afternoon cloud development and any isolated showers that could suppress peak readings by 1–2°C, set against a late-August climatological average near 22°C. No blocking high or Atlantic trough appears likely to drive extremes, keeping probabilities for 24°C or higher below 4%. Updated model runs and official briefings over the next 24 hours will likely refine the exact threshold as surface observations and convective trends become clearer.
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 August 22?
Highest temperature in London on August 22?
22°C 41%
21°C 36%
23°C 17%
20°C 5%
NEW
$15,455 Vol.
NEW
$15,455 Vol.
Aug 22, 2026
18°C or below
1%
19°C
3%
20°C
5%
21°C
36%
22°C
41%
23°C
17%
24°C
3%
25°C
<1%
26°C
<1%
27°C
<1%
28°C or higher
<1%
22°C 41%
21°C 36%
23°C 17%
20°C 5%
NEW
$15,455 Vol.
NEW
$15,455 Vol.
Aug 22, 2026
18°C or below
$470 Vol.
1%
19°C
$449 Vol.
3%
20°C
$1,168 Vol.
5%
21°C
$2,673 Vol.
36%
22°C
$2,441 Vol.
41%
23°C
$1,680 Vol.
17%
24°C
$797 Vol.
3%
25°C
$1,278 Vol.
<1%
26°C
$1,130 Vol.
<1%
27°C
$2,092 Vol.
<1%
28°C or higher
$1,767 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent Met Office guidance, centered on ensemble forecasts from the UK and ECMWF models, has anchored trader sentiment around a 21–23°C maximum for London on August 22, with light winds and sunny intervals supporting the tight cluster of implied probabilities. These outcomes reflect subtle uncertainties in afternoon cloud development and any isolated showers that could suppress peak readings by 1–2°C, set against a late-August climatological average near 22°C. No blocking high or Atlantic trough appears likely to drive extremes, keeping probabilities for 24°C or higher below 4%. Updated model runs and official briefings over the next 24 hours will likely refine the exact threshold as surface observations and convective trends become clearer.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 20, 2026, 12:56 AM ET
Volume
$15,455End Date
Aug 22, 2026Market Opened
Aug 20, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent Met Office guidance, centered on ensemble forecasts from the UK and ECMWF models, has anchored trader sentiment around a 21–23°C maximum for London on August 22, with light winds and sunny intervals supporting the tight cluster of implied probabilities. These outcomes reflect subtle uncertainties in afternoon cloud development and any isolated showers that could suppress peak readings by 1–2°C, set against a late-August climatological average near 22°C. No blocking high or Atlantic trough appears likely to drive extremes, keeping probabilities for 24°C or higher below 4%. Updated model runs and official briefings over the next 24 hours will likely refine the exact threshold as surface observations and convective trends become clearer.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 22 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$15,455End Date
Aug 22, 2026Market Opened
Aug 20, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Recent Met Office guidance, centered on ensemble forecasts from the UK and ECMWF models, has anchored trader sentiment around a 21–23°C maximum for London on August 22, with light winds and sunny intervals supporting the tight cluster of implied probabilities. These outcomes reflect subtle uncertainties in afternoon cloud development and any isolated showers that could suppress peak readings by 1–2°C, set against a late-August climatological average near 22°C. No blocking high or Atlantic trough appears likely to drive extremes, keeping probabilities for 24°C or higher below 4%. Updated model runs and official briefings over the next 24 hours will likely refine the exact threshold as surface observations and convective trends become clearer.
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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