Recent Met Office and ECMWF ensemble guidance for London on August 18 shows minimum temperatures clustered around 16–19°C, with 18°C edging ahead due to model consensus on moderate cloud cover and light winds limiting overnight radiative cooling under lingering high pressure. Warmer sea-surface temperatures around the UK reduce typical cooling, while variable Atlantic airflow introduces uncertainty in exact lows. Traders weigh these factors against historical August minima near 13–15°C, noting that small shifts in forecast humidity or wind speed could tip resolution between the tightly grouped leading outcomes before final observations.
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 18?
Lowest temperature in London on August 18?
18°C 41%
19°C 32%
17°C 13%
16°C 7%
NEW
NEW
Aug 18, 2026
14°C or below
2%
15°C
5%
16°C
7%
17°C
13%
18°C
41%
19°C
32%
20°C
2%
21°C
5%
22°C
2%
23°C
1%
24°C or higher
1%
18°C 41%
19°C 32%
17°C 13%
16°C 7%
NEW
NEW
Aug 18, 2026
14°C or below
$11 Vol.
2%
15°C
$0 Vol.
5%
16°C
$0 Vol.
7%
17°C
$216 Vol.
13%
18°C
$365 Vol.
41%
19°C
$406 Vol.
32%
20°C
$0 Vol.
2%
21°C
$0 Vol.
5%
22°C
$10 Vol.
2%
23°C
$0 Vol.
1%
24°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 18 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 Met Office and ECMWF ensemble guidance for London on August 18 shows minimum temperatures clustered around 16–19°C, with 18°C edging ahead due to model consensus on moderate cloud cover and light winds limiting overnight radiative cooling under lingering high pressure. Warmer sea-surface temperatures around the UK reduce typical cooling, while variable Atlantic airflow introduces uncertainty in exact lows. Traders weigh these factors against historical August minima near 13–15°C, noting that small shifts in forecast humidity or wind speed could tip resolution between the tightly grouped leading outcomes before final observations.
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 18 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 18 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 16, 2026, 12:28 AM ET
Volume
$1,008End Date
Aug 18, 2026Market Opened
Aug 16, 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 18 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 Met Office and ECMWF ensemble guidance for London on August 18 shows minimum temperatures clustered around 16–19°C, with 18°C edging ahead due to model consensus on moderate cloud cover and light winds limiting overnight radiative cooling under lingering high pressure. Warmer sea-surface temperatures around the UK reduce typical cooling, while variable Atlantic airflow introduces uncertainty in exact lows. Traders weigh these factors against historical August minima near 13–15°C, noting that small shifts in forecast humidity or wind speed could tip resolution between the tightly grouped leading outcomes before final observations.
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 18 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 18 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
$1,008End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:28 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Recent Met Office and ECMWF ensemble guidance for London on August 18 shows minimum temperatures clustered around 16–19°C, with 18°C edging ahead due to model consensus on moderate cloud cover and light winds limiting overnight radiative cooling under lingering high pressure. Warmer sea-surface temperatures around the UK reduce typical cooling, while variable Atlantic airflow introduces uncertainty in exact lows. Traders weigh these factors against historical August minima near 13–15°C, noting that small shifts in forecast humidity or wind speed could tip resolution between the tightly grouped leading outcomes before final observations.
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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