Recent ensemble forecasts from the Met Office and GFS models indicate London highs of 22–23°C on September 24 under high pressure, with southerly winds and mostly sunny conditions limiting cloud cover. This setup supports the tight market spread between those two outcomes, as minor variations in afternoon subsidence strength or boundary-layer mixing could shift the peak by 1°C. Historical September averages near 20°C provide context, but the current warm anomaly stems from a persistent Atlantic ridge drawing milder air northward. Traders are monitoring the next model cycles for any shift in low-level temperatures or wind speeds that might favor 21°C or 24°C instead.
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 24?
Highest temperature in London on September 24?
22°C 43%
23°C 33%
21°C 15%
24°C 7%
NEW
NEW
Sep 24, 2026
16°C or below
<1%
17°C
2%
18°C
2%
19°C
2%
20°C
4%
21°C
15%
22°C
43%
23°C
33%
24°C
7%
25°C
1%
26°C or higher
<1%
22°C 43%
23°C 33%
21°C 15%
24°C 7%
NEW
NEW
Sep 24, 2026
16°C or below
$92 Vol.
<1%
17°C
$0 Vol.
2%
18°C
$0 Vol.
2%
19°C
$72 Vol.
2%
20°C
$119 Vol.
4%
21°C
$409 Vol.
15%
22°C
$405 Vol.
43%
23°C
$370 Vol.
33%
24°C
$120 Vol.
7%
25°C
$102 Vol.
1%
26°C or higher
$233 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 24 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 ensemble forecasts from the Met Office and GFS models indicate London highs of 22–23°C on September 24 under high pressure, with southerly winds and mostly sunny conditions limiting cloud cover. This setup supports the tight market spread between those two outcomes, as minor variations in afternoon subsidence strength or boundary-layer mixing could shift the peak by 1°C. Historical September averages near 20°C provide context, but the current warm anomaly stems from a persistent Atlantic ridge drawing milder air northward. Traders are monitoring the next model cycles for any shift in low-level temperatures or wind speeds that might favor 21°C or 24°C instead.
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 24 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 22, 2026, 12:56 AM ET
Volume
$1,923End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 12:56 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 24 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 ensemble forecasts from the Met Office and GFS models indicate London highs of 22–23°C on September 24 under high pressure, with southerly winds and mostly sunny conditions limiting cloud cover. This setup supports the tight market spread between those two outcomes, as minor variations in afternoon subsidence strength or boundary-layer mixing could shift the peak by 1°C. Historical September averages near 20°C provide context, but the current warm anomaly stems from a persistent Atlantic ridge drawing milder air northward. Traders are monitoring the next model cycles for any shift in low-level temperatures or wind speeds that might favor 21°C or 24°C instead.
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 24 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
$1,923End Date
Sep 24, 2026Market Opened
Sep 22, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent ensemble forecasts from the Met Office and GFS models indicate London highs of 22–23°C on September 24 under high pressure, with southerly winds and mostly sunny conditions limiting cloud cover. This setup supports the tight market spread between those two outcomes, as minor variations in afternoon subsidence strength or boundary-layer mixing could shift the peak by 1°C. Historical September averages near 20°C provide context, but the current warm anomaly stems from a persistent Atlantic ridge drawing milder air northward. Traders are monitoring the next model cycles for any shift in low-level temperatures or wind speeds that might favor 21°C or 24°C instead.
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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