Recent forecasts for London on August 21, 2026, from sources such as AccuWeather and regional models indicate overnight lows centered on 12–14°C amid typical late-summer maritime conditions. Mild Atlantic air flow, moderate humidity, and variable cloud cover limit radiative cooling, keeping minimum temperatures near the seasonal average of 13°C rather than allowing sharper drops. Light rain or overcast skies expected in some model runs further moderate overnight lows by trapping heat. Trader consensus, reflected in the 42.5% implied probability for 13°C and 30% for 14°C, aligns with this consensus range, while lower probabilities for 12°C or 15°C capture residual uncertainty in final model outputs. As resolution nears, updated Met Office or ECMWF guidance on wind patterns and cloud timing will be the key variables.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in London on August 21?
Lowest temperature in London on August 21?
13°C 43%
14°C 30%
12°C 13%
11°C 9%
NEW
NEW
Aug 21, 2026
8°C or below
1%
9°C
1%
10°C
5%
11°C
9%
12°C
13%
13°C
43%
14°C
30%
15°C
9%
16°C
8%
17°C
1%
18°C or higher
1%
13°C 43%
14°C 30%
12°C 13%
11°C 9%
NEW
NEW
Aug 21, 2026
8°C or below
$1,153 Vol.
1%
9°C
$5 Vol.
1%
10°C
$0 Vol.
5%
11°C
$0 Vol.
9%
12°C
$20 Vol.
13%
13°C
$102 Vol.
43%
14°C
$53 Vol.
30%
15°C
$5 Vol.
9%
16°C
$26 Vol.
8%
17°C
$0 Vol.
1%
18°C or higher
$0 Vol.
1%
This market will resolve based on the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 forecasts for London on August 21, 2026, from sources such as AccuWeather and regional models indicate overnight lows centered on 12–14°C amid typical late-summer maritime conditions. Mild Atlantic air flow, moderate humidity, and variable cloud cover limit radiative cooling, keeping minimum temperatures near the seasonal average of 13°C rather than allowing sharper drops. Light rain or overcast skies expected in some model runs further moderate overnight lows by trapping heat. Trader consensus, reflected in the 42.5% implied probability for 13°C and 30% for 14°C, aligns with this consensus range, while lower probabilities for 12°C or 15°C capture residual uncertainty in final model outputs. As resolution nears, updated Met Office or ECMWF guidance on wind patterns and cloud timing will be the key variables.
This market will resolve based on the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 19, 2026, 12:28 AM ET
Volume
$1,365End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:28 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...This market will resolve based on the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 forecasts for London on August 21, 2026, from sources such as AccuWeather and regional models indicate overnight lows centered on 12–14°C amid typical late-summer maritime conditions. Mild Atlantic air flow, moderate humidity, and variable cloud cover limit radiative cooling, keeping minimum temperatures near the seasonal average of 13°C rather than allowing sharper drops. Light rain or overcast skies expected in some model runs further moderate overnight lows by trapping heat. Trader consensus, reflected in the 42.5% implied probability for 13°C and 30% for 14°C, aligns with this consensus range, while lower probabilities for 12°C or 15°C capture residual uncertainty in final model outputs. As resolution nears, updated Met Office or ECMWF guidance on wind patterns and cloud timing will be the key variables.
This market will resolve based on the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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
$1,365End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:28 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Recent forecasts for London on August 21, 2026, from sources such as AccuWeather and regional models indicate overnight lows centered on 12–14°C amid typical late-summer maritime conditions. Mild Atlantic air flow, moderate humidity, and variable cloud cover limit radiative cooling, keeping minimum temperatures near the seasonal average of 13°C rather than allowing sharper drops. Light rain or overcast skies expected in some model runs further moderate overnight lows by trapping heat. Trader consensus, reflected in the 42.5% implied probability for 13°C and 30% for 14°C, aligns with this consensus range, while lower probabilities for 12°C or 15°C capture residual uncertainty in final model outputs. As resolution nears, updated Met Office or ECMWF guidance on wind patterns and cloud timing will be the key variables.
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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