Latest Met Office guidance and supporting model consensus indicate a maximum of 21°C for London on September 26 under partly cloudy skies and a fresh northwest airflow, following the warmer air mass that peaks Friday. This positions 20–21°C as the leading market outcomes, reflecting typical late-September cooling after an above-average spell and limited solar heating from increased cloud cover. Ensemble spreads remain narrow around these values, with historical September maxima near 19–20°C providing climatological context. Traders will monitor the next high-resolution model runs and official updates for any shifts in boundary-layer moisture or wind direction that could alter the peak by a degree.
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 26?
Highest temperature in London on September 26?
20°C 40%
21°C 26%
19°C 22%
22°C 21%
NEW
NEW
Sep 26, 2026
15°C or below
3%
16°C
3%
17°C
4%
18°C
15%
19°C
22%
20°C
40%
21°C
26%
22°C
21%
23°C
15%
24°C
5%
25°C or higher
10%
20°C 40%
21°C 26%
19°C 22%
22°C 21%
NEW
NEW
Sep 26, 2026
15°C or below
$0 Vol.
3%
16°C
$0 Vol.
3%
17°C
$0 Vol.
4%
18°C
$0 Vol.
15%
19°C
$8 Vol.
22%
20°C
$17 Vol.
40%
21°C
$0 Vol.
26%
22°C
$0 Vol.
21%
23°C
$0 Vol.
15%
24°C
$0 Vol.
5%
25°C or higher
$0 Vol.
10%
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 26 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.Latest Met Office guidance and supporting model consensus indicate a maximum of 21°C for London on September 26 under partly cloudy skies and a fresh northwest airflow, following the warmer air mass that peaks Friday. This positions 20–21°C as the leading market outcomes, reflecting typical late-September cooling after an above-average spell and limited solar heating from increased cloud cover. Ensemble spreads remain narrow around these values, with historical September maxima near 19–20°C providing climatological context. Traders will monitor the next high-resolution model runs and official updates for any shifts in boundary-layer moisture or wind direction that could alter the peak by a degree.
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 26 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 24, 2026, 12:55 AM ET
Volume
$15End Date
Sep 26, 2026Market Opened
Sep 24, 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 26 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.Latest Met Office guidance and supporting model consensus indicate a maximum of 21°C for London on September 26 under partly cloudy skies and a fresh northwest airflow, following the warmer air mass that peaks Friday. This positions 20–21°C as the leading market outcomes, reflecting typical late-September cooling after an above-average spell and limited solar heating from increased cloud cover. Ensemble spreads remain narrow around these values, with historical September maxima near 19–20°C providing climatological context. Traders will monitor the next high-resolution model runs and official updates for any shifts in boundary-layer moisture or wind direction that could alter the peak by a degree.
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 26 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
$15End Date
Sep 26, 2026Market Opened
Sep 24, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47de9d...Latest Met Office guidance and supporting model consensus indicate a maximum of 21°C for London on September 26 under partly cloudy skies and a fresh northwest airflow, following the warmer air mass that peaks Friday. This positions 20–21°C as the leading market outcomes, reflecting typical late-September cooling after an above-average spell and limited solar heating from increased cloud cover. Ensemble spreads remain narrow around these values, with historical September maxima near 19–20°C providing climatological context. Traders will monitor the next high-resolution model runs and official updates for any shifts in boundary-layer moisture or wind direction that could alter the peak by a degree.
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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