Recent forecasts from the Met Office and GFS models show London’s overnight minimum on September 6 holding near 15°C under southerly flow and high pressure, with hourly readings bottoming out around that level after midnight and before dawn. This aligns with the market’s near-certain 15°C outcome, reflecting observed temperatures and model consensus rather than historical September averages near 12°C. Mild advection and limited radiational cooling under cloudy skies have kept the floor elevated. A sharper nocturnal drop would require clearer skies or a northerly wind shift, both currently absent from updated guidance, though late-day model revisions could still alter the final recorded low.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in London on September 6?
15°C 99.5%
12°C <1%
13°C <1%
14°C <1%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
100%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C or higher
<1%
15°C 99.5%
12°C <1%
13°C <1%
14°C <1%
10°C or below
<1%
11°C
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
100%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the lowest 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 4, 2026, 12:29 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 lowest 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 forecasts from the Met Office and GFS models show London’s overnight minimum on September 6 holding near 15°C under southerly flow and high pressure, with hourly readings bottoming out around that level after midnight and before dawn. This aligns with the market’s near-certain 15°C outcome, reflecting observed temperatures and model consensus rather than historical September averages near 12°C. Mild advection and limited radiational cooling under cloudy skies have kept the floor elevated. A sharper nocturnal drop would require clearer skies or a northerly wind shift, both currently absent from updated guidance, though late-day model revisions could still alter the final recorded low.
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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