Trader sentiment centers on ensemble forecasts from the Met Office and ECMWF projecting a London maximum near 14–15°C for May 18, with modest uncertainty from variable Atlantic airflow and scattered cloud cover that could limit daytime warming. Recent model runs show a stable high-pressure ridge maintaining seasonal norms for mid-May, while slight northerly flow keeps temperatures from climbing further. Historical climatology places typical highs around 16°C, yet current observations confirm cooler-than-average conditions persisting into the forecast window. New model updates and morning observations tomorrow will refine resolution criteria for the precise peak reading.
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 May 18?
Highest temperature in London on May 18?
15°C 39%
14°C 32%
16°C 18%
13°C 10%
NEW
$32,754 Vol.
NEW
$32,754 Vol.
May 18, 2026
8°C or below
<1%
9°C
<1%
10°C
<1%
11°C
<1%
12°C
1%
13°C
10%
14°C
32%
15°C
39%
16°C
18%
17°C
3%
18°C or higher
1%
15°C 39%
14°C 32%
16°C 18%
13°C 10%
NEW
$32,754 Vol.
NEW
$32,754 Vol.
May 18, 2026
8°C or below
$1,791 Vol.
<1%
9°C
$6,300 Vol.
<1%
10°C
$1,833 Vol.
<1%
11°C
$1,525 Vol.
<1%
12°C
$2,248 Vol.
1%
13°C
$3,578 Vol.
10%
14°C
$2,333 Vol.
32%
15°C
$3,118 Vol.
39%
16°C
$3,603 Vol.
18%
17°C
$2,686 Vol.
3%
18°C or higher
$3,901 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader sentiment centers on ensemble forecasts from the Met Office and ECMWF projecting a London maximum near 14–15°C for May 18, with modest uncertainty from variable Atlantic airflow and scattered cloud cover that could limit daytime warming. Recent model runs show a stable high-pressure ridge maintaining seasonal norms for mid-May, while slight northerly flow keeps temperatures from climbing further. Historical climatology places typical highs around 16°C, yet current observations confirm cooler-than-average conditions persisting into the forecast window. New model updates and morning observations tomorrow will refine resolution criteria for the precise peak reading.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 16, 2026, 12:03 AM ET
Volume
$32,754End Date
May 18, 2026Market Opened
May 16, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCThis market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader sentiment centers on ensemble forecasts from the Met Office and ECMWF projecting a London maximum near 14–15°C for May 18, with modest uncertainty from variable Atlantic airflow and scattered cloud cover that could limit daytime warming. Recent model runs show a stable high-pressure ridge maintaining seasonal norms for mid-May, while slight northerly flow keeps temperatures from climbing further. Historical climatology places typical highs around 16°C, yet current observations confirm cooler-than-average conditions persisting into the forecast window. New model updates and morning observations tomorrow will refine resolution criteria for the precise peak reading.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$32,754End Date
May 18, 2026Market Opened
May 16, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCTrader sentiment centers on ensemble forecasts from the Met Office and ECMWF projecting a London maximum near 14–15°C for May 18, with modest uncertainty from variable Atlantic airflow and scattered cloud cover that could limit daytime warming. Recent model runs show a stable high-pressure ridge maintaining seasonal norms for mid-May, while slight northerly flow keeps temperatures from climbing further. Historical climatology places typical highs around 16°C, yet current observations confirm cooler-than-average conditions persisting into the forecast window. New model updates and morning observations tomorrow will refine resolution criteria for the precise peak reading.
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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