**Forecast models from the Met Office and other agencies converged on a maximum of 25°C for London on September 22 under partly cloudy skies with light southerly winds and high pressure.** This aligns with observed conditions reaching the mid-20s Celsius across the region, consistent with late-summer patterns where September averages hover near 18–20°C but warm anomalies can push highs several degrees higher. The near-certain market-implied odds reflect strong agreement across official guidance and real-time data, with minimal spread in ensemble runs. A shift in the final recorded maximum could occur only if station-specific measurements at the resolution site deviate notably from area forecasts due to localized cooling or timing of peak warmth.
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?
25°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$137,699 Vol.
$137,699 Vol.
Sep 22, 2026
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
100%
26°C or higher
<1%
25°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$137,699 Vol.
$137,699 Vol.
Sep 22, 2026
16°C or below
$86 Vol.
<1%
17°C
$125 Vol.
<1%
18°C
$125 Vol.
<1%
19°C
$83 Vol.
<1%
20°C
$570 Vol.
<1%
21°C
$30,447 Vol.
<1%
22°C
$20,090 Vol.
<1%
23°C
$20,326 Vol.
<1%
24°C
$23,922 Vol.
<1%
25°C
$23,904 Vol.
100%
26°C or higher
$18,021 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 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.**Forecast models from the Met Office and other agencies converged on a maximum of 25°C for London on September 22 under partly cloudy skies with light southerly winds and high pressure.** This aligns with observed conditions reaching the mid-20s Celsius across the region, consistent with late-summer patterns where September averages hover near 18–20°C but warm anomalies can push highs several degrees higher. The near-certain market-implied odds reflect strong agreement across official guidance and real-time data, with minimal spread in ensemble runs. A shift in the final recorded maximum could occur only if station-specific measurements at the resolution site deviate notably from area forecasts due to localized cooling or timing of peak warmth.
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
$137,699End 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.**Forecast models from the Met Office and other agencies converged on a maximum of 25°C for London on September 22 under partly cloudy skies with light southerly winds and high pressure.** This aligns with observed conditions reaching the mid-20s Celsius across the region, consistent with late-summer patterns where September averages hover near 18–20°C but warm anomalies can push highs several degrees higher. The near-certain market-implied odds reflect strong agreement across official guidance and real-time data, with minimal spread in ensemble runs. A shift in the final recorded maximum could occur only if station-specific measurements at the resolution site deviate notably from area forecasts due to localized cooling or timing of peak warmth.
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
$137,699End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...**Forecast models from the Met Office and other agencies converged on a maximum of 25°C for London on September 22 under partly cloudy skies with light southerly winds and high pressure.** This aligns with observed conditions reaching the mid-20s Celsius across the region, consistent with late-summer patterns where September averages hover near 18–20°C but warm anomalies can push highs several degrees higher. The near-certain market-implied odds reflect strong agreement across official guidance and real-time data, with minimal spread in ensemble runs. A shift in the final recorded maximum could occur only if station-specific measurements at the resolution site deviate notably from area forecasts due to localized cooling or timing of peak warmth.
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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