Recent Met Office and ECMWF ensemble forecasts for southeast England on May 19 show a lingering cool maritime air mass with variable cloud cover and light southwesterly flow, keeping daytime maxima centered near 16–18 °C. Persistent stratiform cloud has so far suppressed solar heating, while any afternoon breaks could allow brief warming toward 18 °C; conversely, increased drizzle or thicker low cloud would cap readings at 16 °C or below. These narrow thresholds explain why trader-implied probabilities cluster tightly around 16 °C (24.5 %), 17 °C (33.0 %), and 18 °C (32.5 %), with limited conviction on either side until the next high-resolution model runs and official guidance update tomorrow morning.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoLa temperatura più alta di Londra il 19 maggio?
18°C 31%
17°C 30%
16°C 21%
19°C 18%
12°C or below
<1%
13°C
1%
14°C
2%
15°C
11%
16°C
21%
17°C
30%
18°C
31%
19°C
18%
20°C
6%
21°C
1%
22°C or higher
1%
18°C 31%
17°C 30%
16°C 21%
19°C 18%
12°C or below
<1%
13°C
1%
14°C
2%
15°C
11%
16°C
21%
17°C
30%
18°C
31%
19°C
18%
20°C
6%
21°C
1%
22°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 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.
Mercato aperto: May 17, 2026, 12:03 AM ET
Fonte di risoluzione
https://www.wunderground.com/history/daily/gb/london/EGLCThe 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.
Fonte di risoluzione
https://www.wunderground.com/history/daily/gb/london/EGLCRecent Met Office and ECMWF ensemble forecasts for southeast England on May 19 show a lingering cool maritime air mass with variable cloud cover and light southwesterly flow, keeping daytime maxima centered near 16–18 °C. Persistent stratiform cloud has so far suppressed solar heating, while any afternoon breaks could allow brief warming toward 18 °C; conversely, increased drizzle or thicker low cloud would cap readings at 16 °C or below. These narrow thresholds explain why trader-implied probabilities cluster tightly around 16 °C (24.5 %), 17 °C (33.0 %), and 18 °C (32.5 %), with limited conviction on either side until the next high-resolution model runs and official guidance update tomorrow morning.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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