Recent Met Office guidance points to a maximum of 33°C in London on July 8 under building high pressure that advects warm continental air northward, with abundant sunshine and light winds limiting mixing. Ensemble guidance shows tight clustering around 31–34°C, with the slight edge for 33°C reflecting model consensus on peak insolation and minimal cloud cover. Minor spread arises from uncertainties in boundary-layer moisture, exact timing of any Atlantic frontal approach, and the strength of the urban heat-island effect, which can add 1–2°C in central districts. Updated runs from ECMWF and UKV models over the next 24–48 hours will refine whether the maximum edges toward 32°C or 34°C.
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 July 8?
33°C 29%
32°C 26%
31°C 21%
34°C 9%
28°C or below
1%
29°C
1%
30°C
5%
31°C
21%
32°C
27%
33°C
29%
34°C
9%
35°C
8%
36°C
3%
37°C
<1%
38°C or higher
<1%
33°C 29%
32°C 26%
31°C 21%
34°C 9%
28°C or below
1%
29°C
1%
30°C
5%
31°C
21%
32°C
27%
33°C
29%
34°C
9%
35°C
8%
36°C
3%
37°C
<1%
38°C or higher
<1%
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: Jul 6, 2026, 12:02 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 guidance points to a maximum of 33°C in London on July 8 under building high pressure that advects warm continental air northward, with abundant sunshine and light winds limiting mixing. Ensemble guidance shows tight clustering around 31–34°C, with the slight edge for 33°C reflecting model consensus on peak insolation and minimal cloud cover. Minor spread arises from uncertainties in boundary-layer moisture, exact timing of any Atlantic frontal approach, and the strength of the urban heat-island effect, which can add 1–2°C in central districts. Updated runs from ECMWF and UKV models over the next 24–48 hours will refine whether the maximum edges toward 32°C or 34°C.
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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