Recent Met Office and ensemble forecasts for London on September 8 point to a daytime maximum near 20–21°C under westerly flow with partial cloud cover and clearing showers, establishing the market's tight clustering around those outcomes. A cooling trend from the warmer 26°C observed on September 6 reflects the passage of an Atlantic front that limits insolation and advects milder maritime air, while typical early-September climatology (historical averages near 19–20°C) reinforces trader consensus on these values. Key variables differentiating the leading probabilities include the exact timing of any remaining cloud breaks and wind speeds, which could allow brief additional warming or suppress it. Updated high-resolution model runs and the next official Met Office briefing are expected to refine resolution criteria for the highest temperature recorded at official London 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 September 8?
Highest temperature in London on September 8?
20°C 36%
19°C 25%
21°C 22%
22°C 8%
NEW
NEW
Sep 8, 2026
16°C or below
1%
17°C
3%
18°C
6%
19°C
25%
20°C
36%
21°C
22%
22°C
8%
23°C
3%
24°C
1%
25°C
<1%
26°C or higher
<1%
20°C 36%
19°C 25%
21°C 22%
22°C 8%
NEW
NEW
Sep 8, 2026
16°C or below
$503 Vol.
1%
17°C
$56 Vol.
3%
18°C
$141 Vol.
6%
19°C
$831 Vol.
25%
20°C
$696 Vol.
36%
21°C
$744 Vol.
22%
22°C
$987 Vol.
8%
23°C
$194 Vol.
3%
24°C
$6 Vol.
1%
25°C
$7 Vol.
<1%
26°C or higher
$1,440 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 8 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 ensemble forecasts for London on September 8 point to a daytime maximum near 20–21°C under westerly flow with partial cloud cover and clearing showers, establishing the market's tight clustering around those outcomes. A cooling trend from the warmer 26°C observed on September 6 reflects the passage of an Atlantic front that limits insolation and advects milder maritime air, while typical early-September climatology (historical averages near 19–20°C) reinforces trader consensus on these values. Key variables differentiating the leading probabilities include the exact timing of any remaining cloud breaks and wind speeds, which could allow brief additional warming or suppress it. Updated high-resolution model runs and the next official Met Office briefing are expected to refine resolution criteria for the highest temperature recorded at official London 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 8 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 6, 2026, 12:55 AM ET
Volume
$5,606End Date
Sep 8, 2026Market Opened
Sep 6, 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 8 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 ensemble forecasts for London on September 8 point to a daytime maximum near 20–21°C under westerly flow with partial cloud cover and clearing showers, establishing the market's tight clustering around those outcomes. A cooling trend from the warmer 26°C observed on September 6 reflects the passage of an Atlantic front that limits insolation and advects milder maritime air, while typical early-September climatology (historical averages near 19–20°C) reinforces trader consensus on these values. Key variables differentiating the leading probabilities include the exact timing of any remaining cloud breaks and wind speeds, which could allow brief additional warming or suppress it. Updated high-resolution model runs and the next official Met Office briefing are expected to refine resolution criteria for the highest temperature recorded at official London 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 8 Sep '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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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
$5,606End Date
Sep 8, 2026Market Opened
Sep 6, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent Met Office and ensemble forecasts for London on September 8 point to a daytime maximum near 20–21°C under westerly flow with partial cloud cover and clearing showers, establishing the market's tight clustering around those outcomes. A cooling trend from the warmer 26°C observed on September 6 reflects the passage of an Atlantic front that limits insolation and advects milder maritime air, while typical early-September climatology (historical averages near 19–20°C) reinforces trader consensus on these values. Key variables differentiating the leading probabilities include the exact timing of any remaining cloud breaks and wind speeds, which could allow brief additional warming or suppress it. Updated high-resolution model runs and the next official Met Office briefing are expected to refine resolution criteria for the highest temperature recorded at official London 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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