**High pressure over the UK is driving settled, dry conditions with light westerly winds and abundant sunshine across London on September 5, 2026, supporting daytime maxima in the low 20s Celsius.** Official Met Office guidance and multiple model runs indicate a peak near 21–22°C, with some hourly updates and regional variations reaching 23°C under clear skies and low humidity. This consensus aligns with the market's strong preference for 23°C (62.5% implied probability) and 22°C (25.5%), as traders weigh observational data from central London stations against minor model spreads. With minimal cloud cover and no precipitation expected, further warming is limited by the season's typical September baseline and light winds preventing significant mixing. Updated forecasts and real-time station readings through the afternoon remain the key near-term catalysts.
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 5?
23°C 64%
22°C 24%
24°C 8%
21°C 3%
$47,763 Vol.
$47,763 Vol.
18°C or below
<1%
19°C
<1%
20°C
<1%
21°C
3%
22°C
24%
23°C
64%
24°C
8%
25°C
1%
26°C
<1%
27°C
<1%
28°C or higher
<1%
23°C 64%
22°C 24%
24°C 8%
21°C 3%
$47,763 Vol.
$47,763 Vol.
18°C or below
<1%
19°C
<1%
20°C
<1%
21°C
3%
22°C
24%
23°C
64%
24°C
8%
25°C
1%
26°C
<1%
27°C
<1%
28°C or higher
<1%
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 3, 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...**High pressure over the UK is driving settled, dry conditions with light westerly winds and abundant sunshine across London on September 5, 2026, supporting daytime maxima in the low 20s Celsius.** Official Met Office guidance and multiple model runs indicate a peak near 21–22°C, with some hourly updates and regional variations reaching 23°C under clear skies and low humidity. This consensus aligns with the market's strong preference for 23°C (62.5% implied probability) and 22°C (25.5%), as traders weigh observational data from central London stations against minor model spreads. With minimal cloud cover and no precipitation expected, further warming is limited by the season's typical September baseline and light winds preventing significant mixing. Updated forecasts and real-time station readings through the afternoon remain the key near-term catalysts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions