- Will the highest temperature in London be 28°C on September 3?<1¢
- Will the highest temperature in London be 19°C or below on September 3?<1¢
- Will the highest temperature in London be 20°C on September 3?<1¢
- Will the highest temperature in London be 21°C on September 3?1¢
- Will the highest temperature in London be 22°C on September 3?2¢
- Will the highest temperature in London be 23°C on September 3?6¢
- Will the highest temperature in London be 24°C on September 3?13¢
- Will the highest temperature in London be 25°C on September 3?37¢
- Will the highest temperature in London be 26°C on September 3?29¢
- Will the highest temperature in London be 27°C on September 3?11¢
- Will the highest temperature in London be 29°C or higher on September 3?<1¢
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the London City Airport Station in degrees Celsius on 3 Sep '26. The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=eglc If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source. In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket. To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first. 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.
Latest Met Office guidance and supporting model runs indicate a daytime high of 25–26 °C for London on 3 September under partly cloudy skies with moderate westerly winds. These conditions favor modest warming from an overnight low near 19 °C, though variable cloud cover and any isolated showers could cap the peak a degree lower or allow brief clearing to push it higher. Ensemble spread remains modest, reflecting typical late-summer Atlantic flow rather than strong high-pressure dominance, which explains the tight clustering of market-implied probabilities around the 25–26 °C outcomes while leaving room for small revisions from the final overnight model updates.