Recent Met Office forecasts for London on June 15 point to a daytime maximum of 23–25°C under variable cloud, light southeasterly winds, and limited sunshine, creating tight uncertainty between the market’s leading 22°C and 23°C outcomes. Afternoon heating depends on exact cloud breaks and any subtle Atlantic front timing, with ensemble spreads showing small differences in peak values. Historical June averages near 20–22°C provide context, but recent post-May warmth and urban heat-island effects support slightly elevated readings. Traders weigh these model nuances and official station data against potential late-day cooling, keeping probabilities closely balanced until final observations confirm the highest recorded temperature.
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?
22°C 39%
23°C 36%
24°C or higher 13.0%
21°C 12%
$41,558 Vol.
$41,558 Vol.
14°C or below
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
2%
21°C
12%
22°C
39%
23°C
36%
24°C or higher
13%
22°C 39%
23°C 36%
24°C or higher 13.0%
21°C 12%
$41,558 Vol.
$41,558 Vol.
14°C or below
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
2%
21°C
12%
22°C
39%
23°C
36%
24°C or higher
13%
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
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Recent Met Office forecasts for London on June 15 point to a daytime maximum of 23–25°C under variable cloud, light southeasterly winds, and limited sunshine, creating tight uncertainty between the market’s leading 22°C and 23°C outcomes. Afternoon heating depends on exact cloud breaks and any subtle Atlantic front timing, with ensemble spreads showing small differences in peak values. Historical June averages near 20–22°C provide context, but recent post-May warmth and urban heat-island effects support slightly elevated readings. Traders weigh these model nuances and official station data against potential late-day cooling, keeping probabilities closely balanced until final observations confirm the highest recorded temperature.
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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