Persistent rain and heavy showers across London today, driven by a moist southwesterly flow, are suppressing daytime heating and limiting the highest temperature to official Met Office guidance of 21°C. Widespread cloud cover reduces solar insolation while evaporative cooling from precipitation further caps peaks, with hourly observations and model runs showing brief maxima near 20–21°C amid gusty conditions. The narrow spread between 20°C and 21°C outcomes in trader pricing reflects remaining uncertainty over localized shower timing and exact measurement thresholds before the day ends. Updated forecasts and real-time station data from agencies like the Met Office will continue to refine these probabilities through resolution.
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 August 29?
20°C 47%
21°C 37%
22°C 15%
23°C 2%
$117,869 Vol.
$117,869 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
47%
21°C
37%
22°C
15%
23°C
2%
24°C
<1%
25°C
<1%
26°C or higher
<1%
20°C 47%
21°C 37%
22°C 15%
23°C 2%
$117,869 Vol.
$117,869 Vol.
16°C or below
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
47%
21°C
37%
22°C
15%
23°C
2%
24°C
<1%
25°C
<1%
26°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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 27, 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 is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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...Persistent rain and heavy showers across London today, driven by a moist southwesterly flow, are suppressing daytime heating and limiting the highest temperature to official Met Office guidance of 21°C. Widespread cloud cover reduces solar insolation while evaporative cooling from precipitation further caps peaks, with hourly observations and model runs showing brief maxima near 20–21°C amid gusty conditions. The narrow spread between 20°C and 21°C outcomes in trader pricing reflects remaining uncertainty over localized shower timing and exact measurement thresholds before the day ends. Updated forecasts and real-time station data from agencies like the Met Office will continue to refine these probabilities through resolution.
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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