Recent Met Office guidance points to a minimum of 16°C overnight into June 30 for London, following a period of hot weather and shifting to more moderate conditions with lighter winds. Ensemble forecast spreads from global and regional models introduce uncertainty in overnight radiative cooling rates, influenced by variable cloud cover, humidity levels, and urban heat retention, which can keep readings 1–2°C above rural baselines. This produces tight market-implied odds clustered around 15–19°C, as traders weigh the balance between clearer-sky scenarios favoring lower values and residual warmth or breeze limiting the drop. Updated model runs and any Met Office briefing revisions ahead of the date remain the key near-term catalysts.
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 June 30?
Lowest temperature in London on June 30?
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$33,474 Vol.
$33,474 Vol.
Jun 30, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
No
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$33,474 Vol.
$33,474 Vol.
Jun 30, 2026
14°C or below
$2,366 Vol.
No
15°C
$1,760 Vol.
No
16°C
$5,127 Vol.
No
17°C
$5,302 Vol.
No
18°C
$11,022 Vol.
Yes
19°C
$3,567 Vol.
No
20°C
$793 Vol.
No
21°C
$653 Vol.
No
22°C
$525 Vol.
No
23°C
$1,268 Vol.
No
24°C or higher
$1,091 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded at the London City Airport Station in degrees Celsius on 30 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 points to a minimum of 16°C overnight into June 30 for London, following a period of hot weather and shifting to more moderate conditions with lighter winds. Ensemble forecast spreads from global and regional models introduce uncertainty in overnight radiative cooling rates, influenced by variable cloud cover, humidity levels, and urban heat retention, which can keep readings 1–2°C above rural baselines. This produces tight market-implied odds clustered around 15–19°C, as traders weigh the balance between clearer-sky scenarios favoring lower values and residual warmth or breeze limiting the drop. Updated model runs and any Met Office briefing revisions ahead of the date remain the key near-term catalysts.
This market will resolve to the temperature range that contains the lowest temperature recorded at the London City Airport Station in degrees Celsius on 30 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest 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 28, 2026, 12:30 AM ET
Volume
$33,474End Date
Jun 30, 2026Market Opened
Jun 28, 2026, 12:30 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 lowest temperature recorded at the London City Airport Station in degrees Celsius on 30 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 points to a minimum of 16°C overnight into June 30 for London, following a period of hot weather and shifting to more moderate conditions with lighter winds. Ensemble forecast spreads from global and regional models introduce uncertainty in overnight radiative cooling rates, influenced by variable cloud cover, humidity levels, and urban heat retention, which can keep readings 1–2°C above rural baselines. This produces tight market-implied odds clustered around 15–19°C, as traders weigh the balance between clearer-sky scenarios favoring lower values and residual warmth or breeze limiting the drop. Updated model runs and any Met Office briefing revisions ahead of the date remain the key near-term catalysts.
This market will resolve to the temperature range that contains the lowest temperature recorded at the London City Airport Station in degrees Celsius on 30 Jun '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest 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
$33,474End Date
Jun 30, 2026Market Opened
Jun 28, 2026, 12:30 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 points to a minimum of 16°C overnight into June 30 for London, following a period of hot weather and shifting to more moderate conditions with lighter winds. Ensemble forecast spreads from global and regional models introduce uncertainty in overnight radiative cooling rates, influenced by variable cloud cover, humidity levels, and urban heat retention, which can keep readings 1–2°C above rural baselines. This produces tight market-implied odds clustered around 15–19°C, as traders weigh the balance between clearer-sky scenarios favoring lower values and residual warmth or breeze limiting the drop. Updated model runs and any Met Office briefing revisions ahead of the date remain the key near-term catalysts.
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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