Recent model consensus from the UK Met Office and ECMWF indicates a weather front will bring showers and fresher westerly winds to London on September 8, capping daytime maxima after warmer conditions on the 7th. Forecast highs cluster around 19–22°C depending on cloud cover and rainfall timing, with afternoon peaks most likely near 20–21°C under partly cloudy skies. These outcomes align closely with historical early-September averages near 20°C and explain the tight market spread, as small shifts in frontal timing or insolation could differentiate the leading probabilities. Updated model runs and official Met Office briefings over the next 48 hours will provide the clearest resolution signals ahead of the daily maximum measurement.
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 8?
21°C 32%
20°C 27%
22°C 22%
23°C 19%
16°C or below
7%
17°C
9%
18°C
18%
19°C
14%
20°C
26%
21°C
32%
22°C
22%
23°C
19%
24°C
2%
25°C
2%
26°C or higher
2%
21°C 32%
20°C 27%
22°C 22%
23°C 19%
16°C or below
7%
17°C
9%
18°C
18%
19°C
14%
20°C
26%
21°C
32%
22°C
22%
23°C
19%
24°C
2%
25°C
2%
26°C or higher
2%
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 6, 2026, 12:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...Recent model consensus from the UK Met Office and ECMWF indicates a weather front will bring showers and fresher westerly winds to London on September 8, capping daytime maxima after warmer conditions on the 7th. Forecast highs cluster around 19–22°C depending on cloud cover and rainfall timing, with afternoon peaks most likely near 20–21°C under partly cloudy skies. These outcomes align closely with historical early-September averages near 20°C and explain the tight market spread, as small shifts in frontal timing or insolation could differentiate the leading probabilities. Updated model runs and official Met Office briefings over the next 48 hours will provide the clearest resolution signals ahead of the daily maximum measurement.
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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