Recent Met Office guidance and European ensemble model runs have converged on a daytime maximum of 21–22 °C across London under partly cloudy skies and light south-southeasterly flow, anchoring trader consensus at exactly 21 °C. Official temperature observations, recorded at standard Met Office sites using calibrated instruments, currently align with this narrow range, leaving little room for deviation once the daily highest is confirmed. Historical June averages near 19–20 °C provide climatological context, but the current stable synoptic pattern and absence of strong insolation or advection limit upside potential. The only realistic challenges would involve unexpected convective bursts or slight shifts in cloud cover timing that alter the precise peak recorded at the official stations before 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 June 15?
Highest temperature in London on June 15?
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$165,776 Vol.
$165,776 Vol.
Jun 15, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C or higher
No
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$165,776 Vol.
$165,776 Vol.
Jun 15, 2026
14°C or below
$1,504 Vol.
No
15°C
$1,468 Vol.
No
16°C
$1,499 Vol.
No
17°C
$1,037 Vol.
No
18°C
$2,861 Vol.
No
19°C
$8,518 Vol.
No
20°C
$24,628 Vol.
No
21°C
$44,294 Vol.
Yes
22°C
$25,982 Vol.
No
23°C
$25,324 Vol.
No
24°C or higher
$28,662 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 15 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Recent Met Office guidance and European ensemble model runs have converged on a daytime maximum of 21–22 °C across London under partly cloudy skies and light south-southeasterly flow, anchoring trader consensus at exactly 21 °C. Official temperature observations, recorded at standard Met Office sites using calibrated instruments, currently align with this narrow range, leaving little room for deviation once the daily highest is confirmed. Historical June averages near 19–20 °C provide climatological context, but the current stable synoptic pattern and absence of strong insolation or advection limit upside potential. The only realistic challenges would involve unexpected convective bursts or slight shifts in cloud cover timing that alter the precise peak recorded at the official stations before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 15 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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: Jun 13, 2026, 12:12 AM ET
Volume
$165,776End Date
Jun 15, 2026Market Opened
Jun 13, 2026, 12:12 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 15 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Recent Met Office guidance and European ensemble model runs have converged on a daytime maximum of 21–22 °C across London under partly cloudy skies and light south-southeasterly flow, anchoring trader consensus at exactly 21 °C. Official temperature observations, recorded at standard Met Office sites using calibrated instruments, currently align with this narrow range, leaving little room for deviation once the daily highest is confirmed. Historical June averages near 19–20 °C provide climatological context, but the current stable synoptic pattern and absence of strong insolation or advection limit upside potential. The only realistic challenges would involve unexpected convective bursts or slight shifts in cloud cover timing that alter the precise peak recorded at the official stations before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 15 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$165,776End Date
Jun 15, 2026Market Opened
Jun 13, 2026, 12:12 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent Met Office guidance and European ensemble model runs have converged on a daytime maximum of 21–22 °C across London under partly cloudy skies and light south-southeasterly flow, anchoring trader consensus at exactly 21 °C. Official temperature observations, recorded at standard Met Office sites using calibrated instruments, currently align with this narrow range, leaving little room for deviation once the daily highest is confirmed. Historical June averages near 19–20 °C provide climatological context, but the current stable synoptic pattern and absence of strong insolation or advection limit upside potential. The only realistic challenges would involve unexpected convective bursts or slight shifts in cloud cover timing that alter the precise peak recorded at the official stations before 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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