Recent official forecasts from the Met Office and supporting models indicate a high of 21–23°C for London on September 15, driven by a moderating westerly flow of Atlantic air, light rain or showers in the morning transitioning to partly cloudy conditions, and peak afternoon temperatures near 23°C under sunny intervals. Monday’s warmer setup (25–26°C) gives way to increased cloud cover and a modest cooling trend, keeping values near or slightly above the 20.2°C climatological average high. Trader consensus between the closely matched 22°C and 23°C outcomes reflects model spread in exact peak timing and any residual shower activity, with resolution hinging on final observational data from official stations.
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 15?
Highest temperature in London on September 15?
22°C 41%
23°C 39%
21°C 11%
24°C 9%
NEW
NEW
Sep 15, 2026
16°C or below
2%
17°C
2%
18°C
3%
19°C
1%
20°C
3%
21°C
11%
22°C
41%
23°C
39%
24°C
9%
25°C
3%
26°C or higher
2%
22°C 41%
23°C 39%
21°C 11%
24°C 9%
NEW
NEW
Sep 15, 2026
16°C or below
$10 Vol.
2%
17°C
$10 Vol.
2%
18°C
$10 Vol.
3%
19°C
$27 Vol.
1%
20°C
$32 Vol.
3%
21°C
$84 Vol.
11%
22°C
$505 Vol.
41%
23°C
$555 Vol.
39%
24°C
$32 Vol.
9%
25°C
$79 Vol.
3%
26°C or higher
$40 Vol.
2%
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 15 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 official forecasts from the Met Office and supporting models indicate a high of 21–23°C for London on September 15, driven by a moderating westerly flow of Atlantic air, light rain or showers in the morning transitioning to partly cloudy conditions, and peak afternoon temperatures near 23°C under sunny intervals. Monday’s warmer setup (25–26°C) gives way to increased cloud cover and a modest cooling trend, keeping values near or slightly above the 20.2°C climatological average high. Trader consensus between the closely matched 22°C and 23°C outcomes reflects model spread in exact peak timing and any residual shower activity, with resolution hinging on final observational data from official stations.
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 15 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 13, 2026, 12:55 PM ET
Volume
$1,383End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:55 PM 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 15 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 official forecasts from the Met Office and supporting models indicate a high of 21–23°C for London on September 15, driven by a moderating westerly flow of Atlantic air, light rain or showers in the morning transitioning to partly cloudy conditions, and peak afternoon temperatures near 23°C under sunny intervals. Monday’s warmer setup (25–26°C) gives way to increased cloud cover and a modest cooling trend, keeping values near or slightly above the 20.2°C climatological average high. Trader consensus between the closely matched 22°C and 23°C outcomes reflects model spread in exact peak timing and any residual shower activity, with resolution hinging on final observational data from official stations.
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 15 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
$1,383End Date
Sep 15, 2026Market Opened
Sep 13, 2026, 12:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent official forecasts from the Met Office and supporting models indicate a high of 21–23°C for London on September 15, driven by a moderating westerly flow of Atlantic air, light rain or showers in the morning transitioning to partly cloudy conditions, and peak afternoon temperatures near 23°C under sunny intervals. Monday’s warmer setup (25–26°C) gives way to increased cloud cover and a modest cooling trend, keeping values near or slightly above the 20.2°C climatological average high. Trader consensus between the closely matched 22°C and 23°C outcomes reflects model spread in exact peak timing and any residual shower activity, with resolution hinging on final observational data from official stations.
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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