Recent Met Office guidance points to a minimum of 13°C for London on August 20, with other models clustering around 14–15°C amid a mix of cloudy intervals and light showers that limit radiative cooling. These values align with late-summer climatology, where average overnight lows fall to 13–14°C as daylight shortens and Atlantic air masses influence the region. Trader positioning around 15°C (47%) and 16°C (32%) reflects model consensus on modest daytime heating to 22–23°C followed by clear spells overnight, tempered by uncertainty in exact cloud cover and wind patterns that could shift the low by 1–2°C. No major warm advection or blocking high is forecast to push minima higher in the final 48 hours.
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 20?
Lowest temperature in London on August 20?
15°C 47%
16°C 32%
14°C 16%
12°C 7%
NEW
NEW
Aug 20, 2026
10°C or below
1%
11°C
1%
12°C
7%
13°C
5%
14°C
16%
15°C
47%
16°C
32%
17°C
5%
18°C
1%
19°C
1%
20°C or higher
1%
15°C 47%
16°C 32%
14°C 16%
12°C 7%
NEW
NEW
Aug 20, 2026
10°C or below
$0 Vol.
1%
11°C
$0 Vol.
1%
12°C
$0 Vol.
7%
13°C
$0 Vol.
5%
14°C
$0 Vol.
16%
15°C
$14 Vol.
47%
16°C
$25 Vol.
32%
17°C
$5 Vol.
5%
18°C
$0 Vol.
1%
19°C
$50 Vol.
1%
20°C or higher
$5 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 20 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 guidance points to a minimum of 13°C for London on August 20, with other models clustering around 14–15°C amid a mix of cloudy intervals and light showers that limit radiative cooling. These values align with late-summer climatology, where average overnight lows fall to 13–14°C as daylight shortens and Atlantic air masses influence the region. Trader positioning around 15°C (47%) and 16°C (32%) reflects model consensus on modest daytime heating to 22–23°C followed by clear spells overnight, tempered by uncertainty in exact cloud cover and wind patterns that could shift the low by 1–2°C. No major warm advection or blocking high is forecast to push minima higher in the final 48 hours.
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 20 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 20 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 18, 2026, 12:28 AM ET
Volume
$99End Date
Aug 20, 2026Market Opened
Aug 18, 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 20 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 guidance points to a minimum of 13°C for London on August 20, with other models clustering around 14–15°C amid a mix of cloudy intervals and light showers that limit radiative cooling. These values align with late-summer climatology, where average overnight lows fall to 13–14°C as daylight shortens and Atlantic air masses influence the region. Trader positioning around 15°C (47%) and 16°C (32%) reflects model consensus on modest daytime heating to 22–23°C followed by clear spells overnight, tempered by uncertainty in exact cloud cover and wind patterns that could shift the low by 1–2°C. No major warm advection or blocking high is forecast to push minima higher in the final 48 hours.
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 20 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 20 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
$99End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:28 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Recent Met Office guidance points to a minimum of 13°C for London on August 20, with other models clustering around 14–15°C amid a mix of cloudy intervals and light showers that limit radiative cooling. These values align with late-summer climatology, where average overnight lows fall to 13–14°C as daylight shortens and Atlantic air masses influence the region. Trader positioning around 15°C (47%) and 16°C (32%) reflects model consensus on modest daytime heating to 22–23°C followed by clear spells overnight, tempered by uncertainty in exact cloud cover and wind patterns that could shift the low by 1–2°C. No major warm advection or blocking high is forecast to push minima higher in the final 48 hours.
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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