Official forecasts from the UK Met Office and supporting models project a daytime high of 20–21°C in London on September 16, 2026, under partly cloudy skies with moderate westerly winds and minimal precipitation risk. This aligns with seasonal norms for mid-September, where average highs hover near 18–20°C, and current observations show temperatures climbing from overnight lows around 14°C toward afternoon peaks near 20°C. Model consensus favors the lower end of that range, with limited potential for brief warming to 21°C if cloud cover thins more than expected. Trader-implied probabilities reflect this narrow band, as real-time data updates from monitoring agencies continue to constrain upside or downside deviations before final daily readings.
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 16?
Highest temperature in London on September 16?
20°C 95%
21°C 4%
22°C <1%
23°C <1%
$60,643 Vol.
$60,643 Vol.
Sep 16, 2026
15°C or below
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
95%
21°C
4%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
20°C 95%
21°C 4%
22°C <1%
23°C <1%
$60,643 Vol.
$60,643 Vol.
Sep 16, 2026
15°C or below
$1,604 Vol.
<1%
16°C
$392 Vol.
<1%
17°C
$1,181 Vol.
<1%
18°C
$5,699 Vol.
<1%
19°C
$12,975 Vol.
<1%
20°C
$16,160 Vol.
95%
21°C
$11,228 Vol.
4%
22°C
$4,786 Vol.
<1%
23°C
$4,456 Vol.
<1%
24°C
$635 Vol.
<1%
25°C or higher
$1,526 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 16 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.Official forecasts from the UK Met Office and supporting models project a daytime high of 20–21°C in London on September 16, 2026, under partly cloudy skies with moderate westerly winds and minimal precipitation risk. This aligns with seasonal norms for mid-September, where average highs hover near 18–20°C, and current observations show temperatures climbing from overnight lows around 14°C toward afternoon peaks near 20°C. Model consensus favors the lower end of that range, with limited potential for brief warming to 21°C if cloud cover thins more than expected. Trader-implied probabilities reflect this narrow band, as real-time data updates from monitoring agencies continue to constrain upside or downside deviations before final daily readings.
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 16 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 14, 2026, 12:55 AM ET
Volume
$60,643End Date
Sep 16, 2026Market Opened
Sep 14, 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 16 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.Official forecasts from the UK Met Office and supporting models project a daytime high of 20–21°C in London on September 16, 2026, under partly cloudy skies with moderate westerly winds and minimal precipitation risk. This aligns with seasonal norms for mid-September, where average highs hover near 18–20°C, and current observations show temperatures climbing from overnight lows around 14°C toward afternoon peaks near 20°C. Model consensus favors the lower end of that range, with limited potential for brief warming to 21°C if cloud cover thins more than expected. Trader-implied probabilities reflect this narrow band, as real-time data updates from monitoring agencies continue to constrain upside or downside deviations before final daily readings.
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 16 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
$60,643End Date
Sep 16, 2026Market Opened
Sep 14, 2026, 12:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Official forecasts from the UK Met Office and supporting models project a daytime high of 20–21°C in London on September 16, 2026, under partly cloudy skies with moderate westerly winds and minimal precipitation risk. This aligns with seasonal norms for mid-September, where average highs hover near 18–20°C, and current observations show temperatures climbing from overnight lows around 14°C toward afternoon peaks near 20°C. Model consensus favors the lower end of that range, with limited potential for brief warming to 21°C if cloud cover thins more than expected. Trader-implied probabilities reflect this narrow band, as real-time data updates from monitoring agencies continue to constrain upside or downside deviations before final daily readings.
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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