**Mild overnight conditions driven by cloud cover, humidity, and recent thunderstorm activity have positioned 19°C and 18°C as the dominant market outcomes for London's lowest temperature on August 27, 2026.** Official Met Office guidance and multiple forecast models indicate a warm, humid air mass with widespread rain and thunderstorms early in the day, limiting nighttime radiative cooling. Observed early-morning temperatures hovered near 19°C across London sites, with forecast overnight lows generally ranging 16–19°C depending on the timing of any clearing skies. Persistent cloud and moisture from the unsettled pattern—linked to a yellow thunderstorm warning—have suppressed the typical late-August radiative drop that would otherwise push minima lower. Traders have heavily weighted these near-term observational and model consensus data, reflected in the 65% implied probability for 19°C and 25.5% for 18°C, while lower outcomes (16°C or below) remain at single-digit odds. Resolution will hinge on the final verified minimum from official stations once the full 24-hour period concludes.
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 August 27?
Lowest temperature in London on August 27?
19°C 52%
18°C 11%
17°C 3.5%
16°C 1.7%
$10,446 Vol.
$10,446 Vol.
Aug 27, 2026
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
2%
17°C
4%
18°C
23%
19°C
68%
20°C
1%
21°C
<1%
22°C
<1%
23°C or higher
<1%
19°C 52%
18°C 11%
17°C 3.5%
16°C 1.7%
$10,446 Vol.
$10,446 Vol.
Aug 27, 2026
13°C or below
$83 Vol.
<1%
14°C
$83 Vol.
<1%
15°C
$344 Vol.
<1%
16°C
$866 Vol.
2%
17°C
$469 Vol.
4%
18°C
$1,267 Vol.
23%
19°C
$1,748 Vol.
68%
20°C
$1,922 Vol.
1%
21°C
$1,863 Vol.
<1%
22°C
$1,751 Vol.
<1%
23°C or higher
$50 Vol.
<1%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 27 Aug '26.
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 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.**Mild overnight conditions driven by cloud cover, humidity, and recent thunderstorm activity have positioned 19°C and 18°C as the dominant market outcomes for London's lowest temperature on August 27, 2026.**
Official Met Office guidance and multiple forecast models indicate a warm, humid air mass with widespread rain and thunderstorms early in the day, limiting nighttime radiative cooling. Observed early-morning temperatures hovered near 19°C across London sites, with forecast overnight lows generally ranging 16–19°C depending on the timing of any clearing skies. Persistent cloud and moisture from the unsettled pattern—linked to a yellow thunderstorm warning—have suppressed the typical late-August radiative drop that would otherwise push minima lower.
Traders have heavily weighted these near-term observational and model consensus data, reflected in the 65% implied probability for 19°C and 25.5% for 18°C, while lower outcomes (16°C or below) remain at single-digit odds. Resolution will hinge on the final verified minimum from official stations once the full 24-hour period concludes.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 27 Aug '26.
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 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.
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 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 25, 2026, 12:29 AM ET
Volume
$10,446End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 27 Aug '26.
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 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.**Mild overnight conditions driven by cloud cover, humidity, and recent thunderstorm activity have positioned 19°C and 18°C as the dominant market outcomes for London's lowest temperature on August 27, 2026.**
Official Met Office guidance and multiple forecast models indicate a warm, humid air mass with widespread rain and thunderstorms early in the day, limiting nighttime radiative cooling. Observed early-morning temperatures hovered near 19°C across London sites, with forecast overnight lows generally ranging 16–19°C depending on the timing of any clearing skies. Persistent cloud and moisture from the unsettled pattern—linked to a yellow thunderstorm warning—have suppressed the typical late-August radiative drop that would otherwise push minima lower.
Traders have heavily weighted these near-term observational and model consensus data, reflected in the 65% implied probability for 19°C and 25.5% for 18°C, while lower outcomes (16°C or below) remain at single-digit odds. Resolution will hinge on the final verified minimum from official stations once the full 24-hour period concludes.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 27 Aug '26.
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 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.
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 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.
Volume
$10,446End Date
Aug 27, 2026Market Opened
Aug 25, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=eglcResolver
0x69c47De9D...**Mild overnight conditions driven by cloud cover, humidity, and recent thunderstorm activity have positioned 19°C and 18°C as the dominant market outcomes for London's lowest temperature on August 27, 2026.** Official Met Office guidance and multiple forecast models indicate a warm, humid air mass with widespread rain and thunderstorms early in the day, limiting nighttime radiative cooling. Observed early-morning temperatures hovered near 19°C across London sites, with forecast overnight lows generally ranging 16–19°C depending on the timing of any clearing skies. Persistent cloud and moisture from the unsettled pattern—linked to a yellow thunderstorm warning—have suppressed the typical late-August radiative drop that would otherwise push minima lower. Traders have heavily weighted these near-term observational and model consensus data, reflected in the 65% implied probability for 19°C and 25.5% for 18°C, while lower outcomes (16°C or below) remain at single-digit odds. Resolution will hinge on the final verified minimum from official stations once the full 24-hour period concludes.
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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