Forecast models from the Met Office and global ensembles indicate a maximum of 22–24°C for London on September 13 under persistent cloud cover, light southwesterly winds, and scattered drizzle that limits daytime heating. These conditions align with the market’s leading outcomes at 23°C (40.5%) and 22°C (29.5%), reflecting trader weighting of the latest model runs showing modest warming from overnight lows near 17°C. Historical September baselines average 18–19°C, so current mild advection of warmer Atlantic air supports the slight upside to 24°C (16.0% implied). Updated guidance through the day will refine exact maxima, with resolution hinging on official Met Office 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 13?
Highest temperature in London on September 13?
23°C 43%
22°C 30%
24°C 18%
21°C 8.3%
NEW
$29,619 Vol.
NEW
$29,619 Vol.
Sep 13, 2026
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
2%
21°C
8%
22°C
30%
23°C
43%
24°C
18%
25°C
5%
26°C or higher
<1%
23°C 43%
22°C 30%
24°C 18%
21°C 8.3%
NEW
$29,619 Vol.
NEW
$29,619 Vol.
Sep 13, 2026
16°C or below
$133 Vol.
<1%
17°C
$531 Vol.
<1%
18°C
$563 Vol.
<1%
19°C
$491 Vol.
<1%
20°C
$1,381 Vol.
2%
21°C
$2,563 Vol.
8%
22°C
$5,539 Vol.
30%
23°C
$7,726 Vol.
43%
24°C
$7,355 Vol.
18%
25°C
$2,358 Vol.
5%
26°C or higher
$978 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 13 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.Forecast models from the Met Office and global ensembles indicate a maximum of 22–24°C for London on September 13 under persistent cloud cover, light southwesterly winds, and scattered drizzle that limits daytime heating. These conditions align with the market’s leading outcomes at 23°C (40.5%) and 22°C (29.5%), reflecting trader weighting of the latest model runs showing modest warming from overnight lows near 17°C. Historical September baselines average 18–19°C, so current mild advection of warmer Atlantic air supports the slight upside to 24°C (16.0% implied). Updated guidance through the day will refine exact maxima, with resolution hinging on official Met Office 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 13 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 11, 2026, 12:55 AM ET
Volume
$29,619End Date
Sep 13, 2026Market Opened
Sep 11, 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 13 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.Forecast models from the Met Office and global ensembles indicate a maximum of 22–24°C for London on September 13 under persistent cloud cover, light southwesterly winds, and scattered drizzle that limits daytime heating. These conditions align with the market’s leading outcomes at 23°C (40.5%) and 22°C (29.5%), reflecting trader weighting of the latest model runs showing modest warming from overnight lows near 17°C. Historical September baselines average 18–19°C, so current mild advection of warmer Atlantic air supports the slight upside to 24°C (16.0% implied). Updated guidance through the day will refine exact maxima, with resolution hinging on official Met Office 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 13 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
$29,619End Date
Sep 13, 2026Market Opened
Sep 11, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Forecast models from the Met Office and global ensembles indicate a maximum of 22–24°C for London on September 13 under persistent cloud cover, light southwesterly winds, and scattered drizzle that limits daytime heating. These conditions align with the market’s leading outcomes at 23°C (40.5%) and 22°C (29.5%), reflecting trader weighting of the latest model runs showing modest warming from overnight lows near 17°C. Historical September baselines average 18–19°C, so current mild advection of warmer Atlantic air supports the slight upside to 24°C (16.0% implied). Updated guidance through the day will refine exact maxima, with resolution hinging on official Met Office 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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