Latest Met Office guidance for London on 19 August projects a daytime maximum of 24–25 °C under sunny intervals, aligning with the market’s tight clustering around 23–24 °C (combined ~68 % implied probability). Ensemble model runs show modest spread due to uncertainty in afternoon cloud development and boundary-layer mixing, which can trim peak temperatures by 1–2 °C if thicker stratocumulus arrives earlier than expected. Historical August maxima near 22 °C provide context, but current high pressure and light westerly flow favor the upper end of the near-normal range. Traders are weighting the most recent deterministic updates and resolution criteria (official London observing sites) ahead of tomorrow’s final readings.
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 19?
Highest temperature in London on August 19?
24°C 38%
23°C 31%
25°C 18%
22°C 10%
NEW
NEW
Aug 19, 2026
20°C or below
1%
21°C
4%
22°C
10%
23°C
31%
24°C
38%
25°C
18%
26°C
5%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
24°C 38%
23°C 31%
25°C 18%
22°C 10%
NEW
NEW
Aug 19, 2026
20°C or below
$494 Vol.
1%
21°C
$282 Vol.
4%
22°C
$612 Vol.
10%
23°C
$509 Vol.
31%
24°C
$740 Vol.
38%
25°C
$952 Vol.
18%
26°C
$492 Vol.
5%
27°C
$241 Vol.
<1%
28°C
$197 Vol.
<1%
29°C
$286 Vol.
<1%
30°C or higher
$276 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 19 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.Latest Met Office guidance for London on 19 August projects a daytime maximum of 24–25 °C under sunny intervals, aligning with the market’s tight clustering around 23–24 °C (combined ~68 % implied probability). Ensemble model runs show modest spread due to uncertainty in afternoon cloud development and boundary-layer mixing, which can trim peak temperatures by 1–2 °C if thicker stratocumulus arrives earlier than expected. Historical August maxima near 22 °C provide context, but current high pressure and light westerly flow favor the upper end of the near-normal range. Traders are weighting the most recent deterministic updates and resolution criteria (official London observing sites) ahead of tomorrow’s final readings.
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 19 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 19 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 17, 2026, 12:55 AM ET
Volume
$5,081End Date
Aug 19, 2026Market Opened
Aug 17, 2026, 12:55 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 19 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.Latest Met Office guidance for London on 19 August projects a daytime maximum of 24–25 °C under sunny intervals, aligning with the market’s tight clustering around 23–24 °C (combined ~68 % implied probability). Ensemble model runs show modest spread due to uncertainty in afternoon cloud development and boundary-layer mixing, which can trim peak temperatures by 1–2 °C if thicker stratocumulus arrives earlier than expected. Historical August maxima near 22 °C provide context, but current high pressure and light westerly flow favor the upper end of the near-normal range. Traders are weighting the most recent deterministic updates and resolution criteria (official London observing sites) ahead of tomorrow’s final readings.
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 19 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 19 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
$5,081End Date
Aug 19, 2026Market Opened
Aug 17, 2026, 12:55 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Latest Met Office guidance for London on 19 August projects a daytime maximum of 24–25 °C under sunny intervals, aligning with the market’s tight clustering around 23–24 °C (combined ~68 % implied probability). Ensemble model runs show modest spread due to uncertainty in afternoon cloud development and boundary-layer mixing, which can trim peak temperatures by 1–2 °C if thicker stratocumulus arrives earlier than expected. Historical August maxima near 22 °C provide context, but current high pressure and light westerly flow favor the upper end of the near-normal range. Traders are weighting the most recent deterministic updates and resolution criteria (official London observing sites) ahead of tomorrow’s final readings.
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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