Recent Met Office forecasts and supporting model runs from GFS and ECMWF point to a high-pressure ridge over southern England delivering mostly sunny intervals and light southwesterly flow on September 22, supporting daytime maxima near 23–24 °C. These conditions favor modest warming above seasonal normals through reduced cloud cover and minimal mixing, yet variable afternoon cloud and slight model spread in boundary-layer moisture keep 25 °C within reach while capping upside risk. With resolution just two days away, traders are weighting the latest official guidance and ensemble consensus heavily, as small shifts in cloud timing or wind vector could differentiate between the tightly matched 24 °C and 25 °C outcomes.
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 22?
Highest temperature in London on September 22?
24°C 39%
25°C 34%
23°C 18%
26°C or higher 12%
NEW
NEW
Sep 22, 2026
16°C or below
1%
17°C
1%
18°C
1%
19°C
1%
20°C
2%
21°C
2%
22°C
4%
23°C
18%
24°C
39%
25°C
34%
26°C or higher
12%
24°C 39%
25°C 34%
23°C 18%
26°C or higher 12%
NEW
NEW
Sep 22, 2026
16°C or below
$10 Vol.
1%
17°C
$10 Vol.
1%
18°C
$10 Vol.
1%
19°C
$10 Vol.
1%
20°C
$50 Vol.
2%
21°C
$58 Vol.
2%
22°C
$458 Vol.
4%
23°C
$802 Vol.
18%
24°C
$684 Vol.
39%
25°C
$1,775 Vol.
34%
26°C or higher
$782 Vol.
12%
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 22 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 forecasts and supporting model runs from GFS and ECMWF point to a high-pressure ridge over southern England delivering mostly sunny intervals and light southwesterly flow on September 22, supporting daytime maxima near 23–24 °C. These conditions favor modest warming above seasonal normals through reduced cloud cover and minimal mixing, yet variable afternoon cloud and slight model spread in boundary-layer moisture keep 25 °C within reach while capping upside risk. With resolution just two days away, traders are weighting the latest official guidance and ensemble consensus heavily, as small shifts in cloud timing or wind vector could differentiate between the tightly matched 24 °C and 25 °C outcomes.
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 22 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 20, 2026, 12:55 AM ET
Volume
$4,648End Date
Sep 22, 2026Market Opened
Sep 20, 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 22 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 forecasts and supporting model runs from GFS and ECMWF point to a high-pressure ridge over southern England delivering mostly sunny intervals and light southwesterly flow on September 22, supporting daytime maxima near 23–24 °C. These conditions favor modest warming above seasonal normals through reduced cloud cover and minimal mixing, yet variable afternoon cloud and slight model spread in boundary-layer moisture keep 25 °C within reach while capping upside risk. With resolution just two days away, traders are weighting the latest official guidance and ensemble consensus heavily, as small shifts in cloud timing or wind vector could differentiate between the tightly matched 24 °C and 25 °C outcomes.
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 22 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
$4,648End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent Met Office forecasts and supporting model runs from GFS and ECMWF point to a high-pressure ridge over southern England delivering mostly sunny intervals and light southwesterly flow on September 22, supporting daytime maxima near 23–24 °C. These conditions favor modest warming above seasonal normals through reduced cloud cover and minimal mixing, yet variable afternoon cloud and slight model spread in boundary-layer moisture keep 25 °C within reach while capping upside risk. With resolution just two days away, traders are weighting the latest official guidance and ensemble consensus heavily, as small shifts in cloud timing or wind vector could differentiate between the tightly matched 24 °C and 25 °C outcomes.
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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