Persistent rain and thunderstorms across London this morning, driven by warm, humid air masses ahead of a clearing front, have tempered expectations for peak daytime heating. Official Met Office guidance points to a maximum near 26–27 °C once skies partially break, yet lingering cloud, showers, and modest southerly winds are limiting solar insolation and surface warming. Ensemble model spreads and recent observations show afternoon temperatures clustering between 24–25 °C in many runs, creating the tight market split between those two outcomes. Resolution hinges on the precise timing of rain clearance and any urban heat-island boost, with updated forecasts through the afternoon likely to refine the final hourly maximum recorded at official stations.
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 27?
Highest temperature in London on August 27?
24°C 38%
25°C 32%
23°C 19%
22°C 5%
$59,691 Vol.
$59,691 Vol.
Aug 27, 2026
18°C or below
<1%
19°C
<1%
20°C
<1%
21°C
1%
22°C
5%
23°C
19%
24°C
38%
25°C
32%
26°C
5%
27°C
2%
28°C or higher
<1%
24°C 38%
25°C 32%
23°C 19%
22°C 5%
$59,691 Vol.
$59,691 Vol.
Aug 27, 2026
18°C or below
$565 Vol.
<1%
19°C
$658 Vol.
<1%
20°C
$2,298 Vol.
<1%
21°C
$1,680 Vol.
1%
22°C
$5,996 Vol.
5%
23°C
$7,615 Vol.
19%
24°C
$9,759 Vol.
38%
25°C
$10,112 Vol.
32%
26°C
$11,866 Vol.
5%
27°C
$7,134 Vol.
2%
28°C or higher
$2,009 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 27 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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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.Persistent rain and thunderstorms across London this morning, driven by warm, humid air masses ahead of a clearing front, have tempered expectations for peak daytime heating. Official Met Office guidance points to a maximum near 26–27 °C once skies partially break, yet lingering cloud, showers, and modest southerly winds are limiting solar insolation and surface warming. Ensemble model spreads and recent observations show afternoon temperatures clustering between 24–25 °C in many runs, creating the tight market split between those two outcomes. Resolution hinges on the precise timing of rain clearance and any urban heat-island boost, with updated forecasts through the afternoon likely to refine the final hourly maximum recorded at official stations.
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 27 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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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 25, 2026, 12:55 AM ET
Volume
$59,691End Date
Aug 27, 2026Market Opened
Aug 25, 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 27 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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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.Persistent rain and thunderstorms across London this morning, driven by warm, humid air masses ahead of a clearing front, have tempered expectations for peak daytime heating. Official Met Office guidance points to a maximum near 26–27 °C once skies partially break, yet lingering cloud, showers, and modest southerly winds are limiting solar insolation and surface warming. Ensemble model spreads and recent observations show afternoon temperatures clustering between 24–25 °C in many runs, creating the tight market split between those two outcomes. Resolution hinges on the precise timing of rain clearance and any urban heat-island boost, with updated forecasts through the afternoon likely to refine the final hourly maximum recorded at official stations.
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 27 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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
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
$59,691End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Persistent rain and thunderstorms across London this morning, driven by warm, humid air masses ahead of a clearing front, have tempered expectations for peak daytime heating. Official Met Office guidance points to a maximum near 26–27 °C once skies partially break, yet lingering cloud, showers, and modest southerly winds are limiting solar insolation and surface warming. Ensemble model spreads and recent observations show afternoon temperatures clustering between 24–25 °C in many runs, creating the tight market split between those two outcomes. Resolution hinges on the precise timing of rain clearance and any urban heat-island boost, with updated forecasts through the afternoon likely to refine the final hourly maximum recorded at official stations.
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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