Current ensemble forecasts from major models show mild overnight conditions over London through July 31, with minimum temperatures most likely settling near 16–17 °C amid a weakening high-pressure ridge and light winds. Subtle differences between these leading outcomes hinge on small variations in cloud cover, boundary-layer mixing, and the precise arrival of any Atlantic moisture, which can shift the nocturnal minimum by 1 °C. Warmer-than-average July conditions have kept the 19 °C outcome in play, yet recent model runs have narrowed the distribution toward the lower teens. Updated Met Office and ECMWF guidance expected in the next 24–48 hours will refine the exact threshold ahead of market resolution.
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 July 31?
16°C 30%
17°C 21%
18°C 19%
19°C 19%
14°C or below
9%
15°C
10%
16°C
29%
17°C
21%
18°C
19%
19°C
19%
20°C
2%
21°C
1%
22°C
1%
23°C
1%
24°C or higher
1%
16°C 30%
17°C 21%
18°C 19%
19°C 19%
14°C or below
9%
15°C
10%
16°C
29%
17°C
21%
18°C
19%
19°C
19%
20°C
2%
21°C
1%
22°C
1%
23°C
1%
24°C or higher
1%
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: Jul 29, 2026, 12:30 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 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.
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Current ensemble forecasts from major models show mild overnight conditions over London through July 31, with minimum temperatures most likely settling near 16–17 °C amid a weakening high-pressure ridge and light winds. Subtle differences between these leading outcomes hinge on small variations in cloud cover, boundary-layer mixing, and the precise arrival of any Atlantic moisture, which can shift the nocturnal minimum by 1 °C. Warmer-than-average July conditions have kept the 19 °C outcome in play, yet recent model runs have narrowed the distribution toward the lower teens. Updated Met Office and ECMWF guidance expected in the next 24–48 hours will refine the exact threshold ahead of market resolution.
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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