Recent ensemble forecasts from the Met Office and ECMWF place London's maximum temperature on August 25 near 22–23 °C, reflecting modest uncertainty in the strength of an Atlantic ridge and associated cloud cover that could suppress daytime heating by 1–2 °C. With probabilities tightly clustered between 21 °C and 24 °C, traders are weighing subtle differences in boundary-layer moisture and wind direction that determine whether peak readings reach or fall short of the 23 °C threshold. Historical late-August baselines for the city average around 21 °C, so any northward shift in the jet stream or clearer skies would favor the higher outcomes. Updated model runs expected within the next 24 hours will refine these details ahead of market resolution.
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 25?
Highest temperature in London on August 25?
22°C 29%
23°C 27%
21°C 18%
24°C 17%
NEW
NEW
Aug 25, 2026
17°C or below
<1%
18°C
<1%
19°C
3%
20°C
9%
21°C
18%
22°C
29%
23°C
27%
24°C
17%
25°C
8%
26°C
4%
27°C or higher
<1%
22°C 29%
23°C 27%
21°C 18%
24°C 17%
NEW
NEW
Aug 25, 2026
17°C or below
$57 Vol.
<1%
18°C
$58 Vol.
<1%
19°C
$225 Vol.
3%
20°C
$187 Vol.
9%
21°C
$239 Vol.
18%
22°C
$168 Vol.
29%
23°C
$77 Vol.
27%
24°C
$338 Vol.
17%
25°C
$182 Vol.
8%
26°C
$64 Vol.
4%
27°C or higher
$52 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 ensemble forecasts from the Met Office and ECMWF place London's maximum temperature on August 25 near 22–23 °C, reflecting modest uncertainty in the strength of an Atlantic ridge and associated cloud cover that could suppress daytime heating by 1–2 °C. With probabilities tightly clustered between 21 °C and 24 °C, traders are weighing subtle differences in boundary-layer moisture and wind direction that determine whether peak readings reach or fall short of the 23 °C threshold. Historical late-August baselines for the city average around 21 °C, so any northward shift in the jet stream or clearer skies would favor the higher outcomes. Updated model runs expected within the next 24 hours will refine these details ahead of market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 23, 2026, 12:55 AM ET
Volume
$1,648End Date
Aug 25, 2026Market Opened
Aug 23, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 ensemble forecasts from the Met Office and ECMWF place London's maximum temperature on August 25 near 22–23 °C, reflecting modest uncertainty in the strength of an Atlantic ridge and associated cloud cover that could suppress daytime heating by 1–2 °C. With probabilities tightly clustered between 21 °C and 24 °C, traders are weighing subtle differences in boundary-layer moisture and wind direction that determine whether peak readings reach or fall short of the 23 °C threshold. Historical late-August baselines for the city average around 21 °C, so any northward shift in the jet stream or clearer skies would favor the higher outcomes. Updated model runs expected within the next 24 hours will refine these details ahead of market resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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
$1,648End Date
Aug 25, 2026Market Opened
Aug 23, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent ensemble forecasts from the Met Office and ECMWF place London's maximum temperature on August 25 near 22–23 °C, reflecting modest uncertainty in the strength of an Atlantic ridge and associated cloud cover that could suppress daytime heating by 1–2 °C. With probabilities tightly clustered between 21 °C and 24 °C, traders are weighing subtle differences in boundary-layer moisture and wind direction that determine whether peak readings reach or fall short of the 23 °C threshold. Historical late-August baselines for the city average around 21 °C, so any northward shift in the jet stream or clearer skies would favor the higher outcomes. Updated model runs expected within the next 24 hours will refine these details ahead of market resolution.
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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