Official Met Office guidance forecasts a maximum of 21°C for London on September 10 under mostly cloudy skies with southwesterly winds and limited sunshine, keeping daytime heating modest relative to clear-sky potential. Ensemble models show tight clustering around 20–21°C highs, with any late-day showers or thicker cloud reducing the chance of exceeding 22°C while making sub-20°C readings unlikely given the mild maritime airflow. This setup aligns with near-average September conditions for the region, where historical maxima often fall in the 18–22°C range. Trader consensus, reflected in the leading 21°C and 20°C implied probabilities, incorporates the latest model runs and the proximity to resolution, with limited upside risk from forecast revisions expected before final official observations.
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 10?
Highest temperature in London on September 10?
21°C 55%
20°C 36%
22°C 7%
19°C 4%
NEW
$16,634 Vol.
NEW
$16,634 Vol.
Sep 10, 2026
16°C or below
<1%
17°C
<1%
18°C
2%
19°C
4%
20°C
36%
21°C
55%
22°C
7%
23°C
1%
24°C
<1%
25°C
<1%
26°C or higher
<1%
21°C 55%
20°C 36%
22°C 7%
19°C 4%
NEW
$16,634 Vol.
NEW
$16,634 Vol.
Sep 10, 2026
16°C or below
$684 Vol.
<1%
17°C
$448 Vol.
<1%
18°C
$739 Vol.
2%
19°C
$2,585 Vol.
4%
20°C
$2,445 Vol.
36%
21°C
$5,157 Vol.
55%
22°C
$1,718 Vol.
7%
23°C
$1,308 Vol.
1%
24°C
$672 Vol.
<1%
25°C
$310 Vol.
<1%
26°C or higher
$569 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 10 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.Official Met Office guidance forecasts a maximum of 21°C for London on September 10 under mostly cloudy skies with southwesterly winds and limited sunshine, keeping daytime heating modest relative to clear-sky potential. Ensemble models show tight clustering around 20–21°C highs, with any late-day showers or thicker cloud reducing the chance of exceeding 22°C while making sub-20°C readings unlikely given the mild maritime airflow. This setup aligns with near-average September conditions for the region, where historical maxima often fall in the 18–22°C range. Trader consensus, reflected in the leading 21°C and 20°C implied probabilities, incorporates the latest model runs and the proximity to resolution, with limited upside risk from forecast revisions expected before final official observations.
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 10 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 8, 2026, 12:55 AM ET
Volume
$16,634End Date
Sep 10, 2026Market Opened
Sep 8, 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 10 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.Official Met Office guidance forecasts a maximum of 21°C for London on September 10 under mostly cloudy skies with southwesterly winds and limited sunshine, keeping daytime heating modest relative to clear-sky potential. Ensemble models show tight clustering around 20–21°C highs, with any late-day showers or thicker cloud reducing the chance of exceeding 22°C while making sub-20°C readings unlikely given the mild maritime airflow. This setup aligns with near-average September conditions for the region, where historical maxima often fall in the 18–22°C range. Trader consensus, reflected in the leading 21°C and 20°C implied probabilities, incorporates the latest model runs and the proximity to resolution, with limited upside risk from forecast revisions expected before final official observations.
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 10 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
$16,634End Date
Sep 10, 2026Market Opened
Sep 8, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Official Met Office guidance forecasts a maximum of 21°C for London on September 10 under mostly cloudy skies with southwesterly winds and limited sunshine, keeping daytime heating modest relative to clear-sky potential. Ensemble models show tight clustering around 20–21°C highs, with any late-day showers or thicker cloud reducing the chance of exceeding 22°C while making sub-20°C readings unlikely given the mild maritime airflow. This setup aligns with near-average September conditions for the region, where historical maxima often fall in the 18–22°C range. Trader consensus, reflected in the leading 21°C and 20°C implied probabilities, incorporates the latest model runs and the proximity to resolution, with limited upside risk from forecast revisions expected before final official observations.
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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