Official Met Office observations confirmed a maximum temperature of 17°C in London on June 11, anchoring trader consensus at 100% for that outcome. This reading reflects typical early-summer conditions under a stable high-pressure system with limited southerly flow and daytime cloud cover that suppressed further warming. Historical June averages near 20°C provide context, yet the specific synoptic pattern—northwesterly winds and a passing front—kept values in line with the lower end of ensemble forecasts. While post-event data revisions or station-specific anomalies could theoretically shift the final figure, such adjustments remain rare once preliminary quality-controlled reports align across multiple sites.
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 11?
17°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$238,673 Vol.
$238,673 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
19°C or higher
No
17°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$238,673 Vol.
$238,673 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
Yes
18°C
No
19°C or higher
No
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 9, 2026, 1:03 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
Official Met Office observations confirmed a maximum temperature of 17°C in London on June 11, anchoring trader consensus at 100% for that outcome. This reading reflects typical early-summer conditions under a stable high-pressure system with limited southerly flow and daytime cloud cover that suppressed further warming. Historical June averages near 20°C provide context, yet the specific synoptic pattern—northwesterly winds and a passing front—kept values in line with the lower end of ensemble forecasts. While post-event data revisions or station-specific anomalies could theoretically shift the final figure, such adjustments remain rare once preliminary quality-controlled reports align across multiple sites.
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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